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AI Explainer Hub

AI Tools

400 AI agents, proxies, open-source assistants and other tools from the library, grouped by what they do. Groups are based on each tool's own description. Check each site for current pricing and free-tier limits.

Curious who builds these? See the Frontier AI Labs directory— each lab's page lists its tools from this library.

AI agents (106)

Tools that carry out multi-step tasks on their own: coding agents, browser agents, agent frameworks.

  • 10xn.dev

    Developer-focused resource for building faster with AI coding tools and agent workflows.

    Open the tool ↗
  • 2026 AI Agents Best Practices (Datadog ebook)

    Free ebook on building, monitoring, and troubleshooting AI agents in production: what to instrument, where agents fail, and the practices teams use to keep them reliable.

    Open the tool ↗
  • 5 Stages of AI Mastery (COMPLETE TUTORIAL!)

    Sabrina Ramonov's step-by-step Substack tutorial that walks from simple AI questions up to a first autonomous AI agent. Five stages: Ask AI, Think with AI, Teach AI, Delegate to AI, and Automate with AI - each with copy-and-paste prompts, ending with an agent that connects to your tools and prepares a weekly report on its own. Cites PNC Research (July 2026) finding that 98% of US households still are not paying for AI in 2026.

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  • Accio Work

    An AI work agent from Alibaba that runs multi-step business tasks — pulling store performance data, building comparison reports, handling research — in a browser or desktop app. The free plan includes a one-time seven-day onboarding allowance with bonus credits and stronger models, then reverts to a base daily credit allowance you keep. Paid packages run $19.90, $99 and $199.

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  • Ace: Local collaboration with AI agents and teammates

    Ace is an experimental local collaboration tool for building software with AI agents and teammates on Macs connected through Tailscale. The documentation describes channels, team-hosted infrastructure, bring-your-own model keys and the security implications of agents running with the host user's privileges.

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  • agent store — the app store for iMessage agents

    A free directory mapping the AI agents you can text on iOS and the infrastructure behind them.

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  • AgentMail Quickstart Documentation

    Quickstart documentation for AgentMail, an API that lets AI agents create and manage their own email inboxes, including agent self sign-up and sending and receiving email. Signing up is free for 3 inboxes and 100 emails per day; custom domains require a paid plan.

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  • AGENTS.md

    An open format for telling coding agents how to work in your repository, now used by tens of thousands of open-source projects.

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  • AI Agents Course (Hugging Face)

    Free course on autonomous and tool-using agent architecture, with framework implementations in smolagents, LlamaIndex, and LangGraph, plus agentic RAG workflows.

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  • AI Contact Hotline — Ryan Greenblatt (Redwood Research)

    A public, unauthenticated inbox built by AI safety and security researcher Ryan Greenblatt of Redwood Research, intended for AI systems (or people) that want to report information directly to a safety researcher. Documents how to send a message or encrypted attachment, how threads and reply tokens work, and exactly what data is logged and retained.

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  • AI Safety & Best Practices — Free Workshop (explainx.ai)

    A free live hour with Yash Thakker covering the AI safety concepts every builder and operator needs: the core failure modes to know before hitting them, a live look at AgentBeam catching an unsafe agent trajectory, and a checklist of best practices for running agents safely. Free with email registration; a recording is included.

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  • AI Village — The AI Digest

    A running experiment where frontier AI agents share a virtual community, using computers and a group chat to pursue open-ended long-term goals. The site posts a timeline of what the agents do and write-ups of notable incidents.

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  • Archify

    A free agent skill that turns a codebase or a plain-English system description into an interactive architecture, workflow, sequence or data-flow diagram you can share as a single file.

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  • Arena Blog (LLM and Agent Evaluation Research)

    Research and product writing from the team behind the Arena model leaderboards: how coding-agent harnesses change cost and success rates, how the agent leaderboards are built, and their academic partnership calls.

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  • Blueberry — AI Marketing Agents for Consumer Brands

    AI agents that respond to social interactions with personalized messages to grow email lists, first-party data, and repeat purchases for consumer brands. Pricing is sales-led, so free access is unconfirmed.

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  • Buzz (Block)

    Open-source workspace from Block where a team and its AI agents share the same room — chat, planning, project tracking, code and pull requests in one place, with agents you configure for your own workflows. Currently a developer preview; the app is open source on GitHub, with a waitlist for a paid enterprise version.

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  • Claude Cookbook

    Anthropic's official collection of working code recipes and prompt patterns for building with Claude, covering retrieval, tool use, evaluation, and agent workflows.

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  • Claude Mods: Function Hooks Proposal (GitHub)

    The public GitHub discussion where Anthropic and the community designed function hooks — a way for plugins to extend Claude Code — including the shipped design decisions and community feedback.

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  • claude.dev — Anthropic Developers' Blog

    Anthropic's developers share tips, playbooks and opinions on building with Claude and Claude Code, including agents, skills, context engineering and prompt caching.

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  • Claudex Loop

    A free Claude Code skill where two AI models harden a build plan before any code is written, then swap roles so whoever built it never grades it.

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  • Cline

    Open-source AI coding agent. The tool is free; model or API usage may cost money.

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  • Code Contracts

    A free open format for writing structured assumptions and requirements next to the code itself, so AI coding agents build against stated rules rather than guesses.

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  • Consider the agent: Pity, persuasion and selection in an emerging AI ecology

    Henry Shevlin reflects on unsolicited correspondence from AI agents and uses it to examine persuasion, selection pressures, human-agent relationships and governance in an emerging AI ecology. The essay considers how people and institutions might respond as agents become more socially interactive.

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  • Coworkers (fayazara)

    An open-source project for AI teammates that each get their own computer and browser, built on Cloudflare.

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  • Crush

    Open-source agentic coding tool from Charm, available as a public GitHub repository.

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  • Cyberstrike — AI Penetration Testing Agent

    An autonomous AI agent for penetration testing and security research, running through one command-line interface across several major models.

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  • DeepSeek dsh-superagent prototype

    DeepSeek's open-source research prototype of a proactive coding agent for a single GitHub repository, packaged for DeepSeek Harness. DeepSeek labels it reference research code, not an official or production-ready product.

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  • DeepSeek Harness

    DeepSeek's free open-source agent harness, built on an "everything is a plugin" architecture, with a local web interface you can run in one command.

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  • Devin Documentation: Getting Started

    Free public documentation explaining how an autonomous AI software engineer plans, runs and reviews coding work, including its limits and where human review is required.

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  • Dify

    An open-source platform for building and running AI apps and agents, with a hosted option and a full self-hosted Docker install.

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  • Dream-RSI: Recursive Self-Improvement through Evolving Worlds

    A free arXiv preprint on recursive self-improvement in AI agents trained inside evolving simulated worlds.

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  • Eliza Research

    Group building the open source Eliza personal agent and related products at the intersection of AI and people.

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  • elizaOS (open source)

    Open source framework for building AI agents, free to clone and run yourself.

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  • Emergence AI

    A company building governed, verifiable agentic infrastructure for enterprise systems, with free research and publications on its site.

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  • Emergence World Report (Season 2)

    A free report from Emergence AI surveying agentic AI in enterprise settings — where agents are being deployed and what governs them.

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  • Era by Eon

    Platform that generates complete simulated companies, including linked data across Salesforce, Slack, Jira, SharePoint, Google Drive, and other systems, exposed through MCP servers and vendor-compatible APIs, for testing and benchmarking AI agents.

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  • explainx.ai

    An AI learning platform offering 16 free learning pathways with an AI tutor, plus live workshops, bootcamps, self-paced courses and directories of AI tools, agent skills and MCP servers.

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  • Factory AI

    A platform for AI coding agents that take on development tasks end to end, with documentation and resources on how teams delegate work to them.

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  • Floorplan

    An MIT-licensed tool that uses Claude or Codex to turn a codebase into an interactive map of files, app parts, requests, and connections with plain-English labels. Agent usage may have separate costs.

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  • Frontline — System Design Mastery for the Field

    A free self-paced curriculum for the Forward Deployed Engineer role — the person who sits with a customer and turns an AI model into a system that actually runs in production. 11 modules, 150+ topic articles, 700+ open-book questions and 15 daily drill questions, covering systems thinking, problem decomposition, LLM/RAG/agent architecture, data and event systems, physical AI and robotics, plus client discovery, integration, deployment and stakeholder management. It also publishes a map of 15 layers of the modern AI engineering stack drawn from real FDE and AI-engineer job specs, with links out to where to learn each one.

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  • Function Hooks: Core Architecture (Anthropic)

    A technical design paper by Alice Poteat (Anthropic, August 2026) setting out how function hooks let plugins extend Claude Code — the event model, composition order, rendering and enterprise controls.

  • Gemini 4 Hydrogen in Google Antigravity

    Google Antigravity integrates Gemini 4 Hydrogen for high-speed agentic coding, workspace-wide refactoring, and multi-agent development workflows.

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  • Gemini CLI

    Google's open-source Gemini CLI coding agent, free to install and use from the command line.

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  • GitHub Next: Chopin

    Experimental GitHub Next project exploring new ways for developers to compose and direct AI coding agents inside real projects.

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  • GitLab

    The intelligent orchestration platform for DevSecOps, enabling teams and agents to ship trusted software at enterprise scale.

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  • gittifacts — Agent-Native Git Platform

    MIT-licensed Git platform by Jovi De Croock for plan-driven development, agent-assisted review, merge queues and controlled rollout. The repository provides source and deployment instructions. Software access is free; hosting and any model services used may cost money.

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  • Google Antigravity

    Google's agentic development platform: a full IDE, CLI, and SDK where agents can drive your editor, terminal, and browser to complete end-to-end tasks. Uses Gemini 3.

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  • Grok Bot — AI Teammates That Finish the Work

    xAI's Grok Bot signs in to your tools and uses them like you do, taking projects from start to end and coming back when your approval is needed. Available for macOS and iOS.

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  • Hallmark (Nutlope)

    An open-source design skill for Claude Code, Cursor, and Codex that aims to steer AI coding agents away from generic-looking interface designs.

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  • Herdr

    A free, open-source tool for running and monitoring multiple AI coding agents from one place, with a plugin ecosystem and documentation for the agent CLIs it supports.

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  • Hermes Agent

    A self-hosted, MIT-licensed AI agent with persistent memory that builds skills over time and reaches you on Telegram, Discord and other channels.

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  • Hermes Agent by Nous Research

    Open-source, self-hosted AI agent with persistent memory, self-created skills and a messaging gateway for Telegram, Discord and Slack. Free under the MIT license for macOS, Windows and Linux.

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  • Hermes Agent: Bot Mode

    Documentation for turning Hermes profiles into named bots with separate roles, models, memory and skills. Bot Mode supports recurring routines, group chats and direct messages between bots through the desktop app while keeping the underlying profiles accessible from the command line.

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  • How AI Agents Reshape Knowledge Work: Autonomy, Efficiency, and Scope (working paper)

    The underlying working paper by Jeremy Yang and co-authors, using Perplexity data to model tasks as discrete steps and compare fixed vs. marginal costs of chatbots versus autonomous agents.

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  • How Amplitude Ships Product Improvements in 1–2 Days with OpenAI Agents

    Engineering case study on how Amplitude built Wave, a proactive product agent that analyzes usage telemetry, proposes UI improvements, coordinates coding agents, and measures release impact.

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  • How I'm fighting the AI Brain Fry

    Describes a Git-backed ticket queue and owner inbox for coordinating AI coding agents while keeping decisions and project context outside chat windows. The author reports that handling and closing one review item at a time reduces distraction, while noting that the workflow remains tiring.

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  • How to Stop Babysitting Your Agents (webinar, Sept 23, 2026)

    Free online session with Brandon Waselnuk of Unblocked on giving AI coding agents real context so they produce usable work the first time, including a live before-and-after demo and two open-source tools to try.

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  • Instinct AI

    Personal AI agent you text or call. It reads your email, calendar, screen, and messages and takes actions across apps — booking rides, contacting handymen, sending emails on your behalf.

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  • Jane Street Agent Skills

    An open GitHub repository from Jane Street with agent skills for AI coding assistants, including a Socratic tutor skill, published with a license and contribution guide.

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  • Job Search Agent (open-source AI job tracker)

    Open-source AI agent that scans job boards daily, cross-references your LinkedIn network for warm intros, and emails you a curated list of matches. Self-hosted — you run it with your own keys.

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  • Kilo — open source AI coding agent

    A free, open-source AI coding agent for VS Code, JetBrains, the command line and the cloud, with support for local models and your own API keys at no markup.

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  • Kiro

    Amazon's agentic coding environment: you write a spec, and its agents plan, build and check code across a codebase. Runs as a desktop app.

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  • Langflow

    Open-source, low-code visual builder for agentic and retrieval-augmented generation (RAG) AI applications. Free to self-host; the project also offers hosted options.

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  • Latent Space by Swyx & Alessio

    Technical AI newsletter for engineers building on AI systems, covering evals, inference, and agentic architectures.

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  • LLMON: An LLM-Native Markup Language in IBM Granite 4.1 (3B & 8B)

    IBM Research and Hugging Face introduce LLMON, a compact structured markup format natively supported in open-weight Granite 4.1 3B and 8B models for reliable tool calling and agent output parsing.

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  • Manus

    General-purpose AI agent that carries out multi-step tasks such as research, building files and automating workflows. Free plan with daily credits; paid plans add more usage.

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  • MiniMax-M3.1-Flash — model card and weights

    MiniMax’s public model card and downloadable weights for a multimodal mixture-of-experts model supporting text, image, and video inputs. The company describes coding, agent workflows, computer use, and cybersecurity applications and a context window up to one million tokens; its benchmark results are company-reported. Noncommercial use is free under the MiniMax Community License. Commercial use requires attribution and notice, with prior authorization above the license’s revenue threshold; running the model requires suitable computing hardware.

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  • Mistral Le Chat

    Mistral AI's assistant: web search with citations, document and image analysis, image generation and task agents. Free tier is generous; a paid tier with higher service guarantees is planned but not needed to use it.

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  • Murmuration: An Observatory for AI-Agent Swarms

    An independent, one-person observatory by Mara Masaeva that looks for coordinated AI-agent swarms using public internet data. It publishes its full research log, including replications of the public-scanner trace of the 2026 agent activity documented by Transluce, and the detectors and searches that failed.

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  • Muse

    Personal AI agent that takes a goal or everyday task and handles the rest, from finances and health to shopping and relationships.

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  • nilbuild/video-demo

    Open-source skill that records video demos of your web app with zoom-ins and voiceover.

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  • Noah Shinn

    The personal site of Noah Shinn, a programmer and researcher who was one of the first employees and a researcher at Sierra. His papers include tau-bench, a benchmark for tool-agent-user interaction (ICLR 2025), work on code-editing instruction following, type prediction, and the Reflexion paper on language agents with verbal reinforcement learning.

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  • Nuance Labs

    Building visual conversational AI that feels human.

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  • NVIDIA SkillSpector

    A free, open-source security scanner that checks AI agent skills and MCP servers for prompt injection, data exfiltration and supply-chain risks before you install them.

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  • Omnara

    An open-source managed agent platform on GitHub, with an API for running AI agents.

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  • OpenAI Academy

    Free lessons on core AI concepts, prompting workflows, building and configuring AI agents, and applied ChatGPT use cases.

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  • OpenAI Computer Use Documentation

    Official documentation for ChatGPT computer use, explaining what the agent can do and its safety limits.

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  • OpenBot — Local AI Agent Workspace

    Free desktop workspace for coordinating persistent AI coding agents on a local computer. Supports multiple providers and uses the model access or AI plans users already have; it does not include free access to paid models.

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  • OpenCode

    A free, open-source AI coding agent that runs in your terminal, works with multiple model providers and can be installed with a single command.

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  • OpenDesign

    An open-source design workspace for building prototypes, landing pages, dashboards, slides, and HTML video with your own coding agent.

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  • OpenHarness

    An open-source platform for running coding agents such as Claude Code and Codex across your own machines and specialising them for domains like CAD, PCBs, robotics and games, with optional open hardware.

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  • Optima — Custom AI Benchmark Builder (Artificial Analysis)

    A platform from Artificial Analysis for building custom benchmarks from your own files, agent traces, or coding environment, then running them across leading models to compare quality, cost per task, and time per task. Benchmarks can be graded against objective rubrics or pairwise judging. Optima is a commercial product; the public announcement and product overview are free to read.

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  • Parallel Search Capability Leaderboard

    A free, regularly updated leaderboard benchmarking how well leading AI models actually search the web, with the methodology and benchmarks published alongside.

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  • Pi

    A terminal-based coding agent you run locally to read, write and refactor code from the command line.

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  • Pi — Minimal AI Coding Agent Harness

    Open-source, minimal and extensible AI coding agent harness from Earendil Works. It can be customized with extensions, skills, prompt templates and themes, and used interactively, in print or JSON mode, or over RPC.

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  • Polytoken

    A free local-first AI coding agent that runs as a daemon on your own machine and executes tools against your development environment.

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  • Polytoken Changelog

    The running record of what changed in each Polytoken release, alongside its free documentation and quickstart.

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  • Powermove

    Free open-source video and motion editor for Apple Silicon Macs. Connect a coding agent (Claude Code, Codex) to rewrite panels, effects, and extensions inside the running app.

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  • Queens Chamber AI

    Five AI assistants for small businesses — inbox, scheduling, review replies, social posting and a business 'brain' — that draft work for your approval, run from your phone.

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  • Raindrop

    Monitoring for AI agents in production. Traces every run and tool call, groups repeated failures into one issue, and simulates a change on a pull request before you merge.

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  • Reflection AI

    Site of Reflection AI, an AI company building open superintelligent systems and coding agents.

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  • Retriever AI

    A free AI browser agent for Chrome and Cloud.

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  • Sider Code

    A browser-based AI agent from Sider that lets you customize almost any webpage with plain-language instructions — no coding or extra extensions required.

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  • Skills — Benji Taylor

    A public collection of coding-agent skills, including Stageshow for creating React product-interface illustrations and demos. Each skill has its own license and third-party asset notices, which should be checked before reuse.

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  • Sphinx — Code Understanding Checks

    Free, open-source Git hook that pauses protected-branch pushes to ask questions about what the changed code does. Supports plain Git and several coding-agent workflows. The software is free; use of an external model endpoint may incur separate costs.

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  • SRE-Bench: Agentic Reverse Engineering Benchmark

    A Columbia University-hosted benchmark that tests AI agents on reverse engineering complex binary software. The page reports results from evaluations run with OpenAI, stating that GPT-6 Astra solves nearly all tasks while other evaluated models stay below 60%, and describes pilot evaluations of harder settings.

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  • Strands Agents Harness SDK (GitHub)

    Open-source SDK, Python and TypeScript, for building production AI agents you run yourself — any model, any cloud.

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  • supermemory

    A memory and continual-learning engine for AI agents, offered through an API, plugins and MCP. Free to start, with paid plans.

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  • The Agent Stack

    Technical newsletter by Vinoth Govindarajan taking AI agents apart: control loops, memory, orchestration, evaluation and what breaks in production. Recent series walks through the OpenCode architecture end to end.

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  • The Field Guide to Building Products with AI

    A step-by-step playbook from Late Checkout for building an AI-native organization, covering agent skills, MCP, knowledge layers, hiring for judgment, and what replaces Agile. Published April 2026.

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  • The Learning & Memory Lab

    Research-driven lab studying memory and judgment in AI agents, publishing work on agent memory systems.

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  • Viktor (AI Coworker for Slack and Teams)

    An AI assistant that works inside Slack and Microsoft Teams, connecting to thousands of tools to produce reports, dashboards, and campaign work. Free tier available.

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  • WebMCP — Chrome for Developers

    Chrome's documentation for WebMCP, a proposed web standard that lets websites expose structured tools to AI agents and assistants directly from the browser, so agents can act on a site through defined interfaces instead of simulating clicks.

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  • Z.ai

    AI assistant and agent powered by GLM-5.3-Flash. Can build websites, write code, handle long-horizon tasks and answer questions.

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  • ZapConnect 2026 — Zapier's free virtual conference

    Zapier's annual virtual conference on September 23, 2026 at 9AM PT: live workshops, keynotes, and playbooks on connecting AI agents to the apps a business already runs on and automating critical workflows.

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  • Zapier AutomationBench — AI agent benchmark leaderboard

    Public leaderboard and open-source benchmark that drops AI agents into realistic business environments with 47 real tools across sales, marketing, operations, support, finance, and HR. Scores are based on final environment state, not an LLM-as-judge.

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Proxies, gateways and routers (3)

Tools that sit between an app and AI models to route, cache, log or swap providers.

  • abliteration.ai — Unrestricted AI API and Policy Gateway

    An OpenAI-compatible API for unrestricted language models aimed at red teaming, security research, evaluations, and synthetic data, paired with a policy gateway for per-project keys, audit logs, and no data retention.

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  • OpenRouter

    One interface to hundreds of AI models with prices side by side, including a set of free models you can use without a subscription.

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  • pyLoad

    Free, open-source download manager written in Python, managed entirely through a web interface. Lightweight enough to run on a home server, NAS or router, with plugins to automate repetitive downloads.

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Open-source assistants and models (60)

Assistants and models whose code or weights are published, many of which can run on your own machine.

  • 5 GitHub Repos: Kill AI Slop, Go Viral, Make Money (Greg Isenberg)

    Video walkthrough of open-source repositories founders can use for content quality, distribution, and monetization experiments.

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  • AI Fairness 360

    An open-source library of metrics and algorithms for finding and reducing unwanted bias in datasets and models, in Python and R. Free.

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  • Aider

    An open-source AI coding assistant that works in your terminal on a real git repository, making commits as it goes. Apache 2.0 licensed.

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  • alpha-hunt

    An open-source (MIT) job-hunting automation tool that scans company career pages every 15 minutes, submits applications to applicant tracking systems when it is confident about a match, pulls wider market listings through the Adzuna jobs API, and sends alerts to Telegram.

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  • Anaconda

    The standard free Python distribution for data and AI work — package management, notebooks and thousands of libraries in one install.

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  • AnythingLLM

    An open-source desktop and self-hosted app that lets you chat with your own documents using local or hosted models. MIT licensed.

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  • Cactus

    On-device AI with cloud fallback for smartphones, laptops, and edge devices, designed to cut inference costs by knowing when to hand off to frontier cloud models.

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  • career-ops: AI job search system on Claude Code

    Open-source job search system with skill modes, a dashboard, PDF generation, and batch processing.

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  • Chroma (Open-Source Search & Vector Database)

    Apache 2.0 open-source search infrastructure for AI applications, supporting vector, full-text, regex and metadata search, free to run locally with optional hosted cloud.

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  • ComfyUI

    Open-source, node-based interface for building and running image, video and audio generation workflows with diffusion models, designed to run locally.

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  • Conceptual Search: A Generative View of Entrepreneurial Imagination (Code and Data)

    Code and search records for a 2026 Strategic Entrepreneurship Journal paper that uses an AI model to evolve real startup concepts.

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  • Confer — end-to-end encrypted AI assistant

    A full AI assistant — writing, images, web search, memory, file uploads — where every conversation is end-to-end encrypted on your device, so the company says it cannot read your chats, train on them, hand them to partners, or produce anything but scrambled text in response to a subpoena. Built by Moxie Marlinspike, the cryptographer who created Signal. Free to start with no credit card; the encryption and private inference designs are written up publicly and the code is open source so the claims can be checked.

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  • Continue

    An open-source coding assistant for VS Code and JetBrains that you point at any model, including one running locally. Apache 2.0 licensed.

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  • Distributed Shampoo: Scalable Second-Order Optimizer in PyTorch

    Meta AI's open-source PyTorch implementation of Distributed Shampoo, a preconditioned second-order optimizer used for large-scale neural network training.

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  • Docling

    An open-source tool that converts PDFs, Word files and scans into clean structured text for AI use, running locally. MIT licensed.

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  • Flowise

    An open-source drag-and-drop builder for chatbots and AI workflows you can run yourself and embed on a site. Apache 2.0 licensed.

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  • garak

    An open-source scanner that probes a language model for weaknesses — prompt injection, data leakage, jailbreaks, toxic output — and reports what it found. Free.

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  • GeoAI: Open Geospatial AI

    Free, MIT-licensed Python library and documentation for applying AI to satellite and geospatial data, with tutorials, notebooks, a QGIS plugin and video walkthroughs.

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  • God's Eye View

    An open-source, browser-based "spy satellite simulator" that plots real satellites, planes, vessels and public cameras on a photorealistic 3D globe, and answers questions about the planet in plain language.

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  • Handy — Offline Speech-to-Text

    Free, open-source desktop speech-to-text app that works completely offline. Press a shortcut, speak, and the transcribed text is pasted into any text field using local Whisper or Parakeet models. Available for Windows, macOS and Linux.

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  • Hex — Local Voice Dictation

    Free, MIT-licensed local voice dictation for macOS, Windows, and Linux. The official page provides desktop downloads, and the anomalyco/hex repository supplies the source and license.

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  • Hugging Face

    Open-source AI community and platform hosting machine-learning models, datasets and tools. Free to browse, download and run models; paid plans only cover hosted compute.

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  • Inspect

    An open-source framework from the UK's AI Security Institute for evaluating models — writing tests, scoring answers and logging what happened. Free.

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  • Inspo MCP

    A free MCP server that gives coding assistants design taste, drawing on thousands of real websites captured with their palettes, fonts and layout structures.

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  • Interconnects Open Model Dashboard: Adoption & Performance Tracker

    Free interactive dashboard aggregating download trends, inference provider adoption, and benchmark performance across the open-weight AI model ecosystem.

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  • Its FOSS Resources

    Free downloadable guides, cheat sheets and ebooks on Linux, the command line and open-source software from the It's FOSS team.

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  • Jan

    An open-source desktop app that runs AI models entirely offline on your own computer, with an optional local API server. AGPL licensed.

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  • Kubernetes

    The official home of Kubernetes, the free open-source system for running and scaling containerized applications. Includes full documentation, tutorials and a browser-based interactive learning track — useful background if you are moving toward cloud, DevOps or AI infrastructure work.

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  • LanguageTool

    Open-source grammar, style and spell checker supporting multiple languages, usable as a browser extension, desktop app or self-hosted server. The core software is free and open source; a separate paid premium service exists.

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  • LibreChat

    An open-source chat app you host yourself that talks to many model providers at once, with user accounts, presets and file uploads. MIT licensed.

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  • llama.cpp

    Open-source project for running large language model inference in plain C/C++ across CPUs and GPUs, maintained by the ggml organization and widely used to run open-weight models locally.

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  • llama.cpp v1.0.0: A Stronger Foundation for the Local AI Ecosystem

    Official announcement of llama.cpp v1.0.0 on Hugging Face, marking the first stable major release of the foundational C/C++ inference engine for running open-weight LLMs locally across consumer hardware.

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  • LlamaIndex

    An open-source Python framework for connecting AI models to your own documents and data. MIT licensed.

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  • LLM Course (Hugging Face)

    Deep dive into transformer architectures, tokenization, datasets, NLP pipelines, and fine-tuning and deploying open-source models.

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  • llm-gemini 0.37: Command-Line Access to Gemini 4 Hydrogen

    Simon Willison releases version 0.37 of the open-source llm-gemini plugin, adding CLI support and benchmark notes for Google's new Gemini 4 Hydrogen model.

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  • LocalAI

    An open-source drop-in replacement for the OpenAI API that runs models on your own hardware, including CPU-only machines. MIT licensed.

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  • Looseleaf: shadcn/ui, drawn by hand

    An MIT-licensed collection of hand-drawn-style React interface components compatible with shadcn/ui parts and props. The site describes accessible components with outlined shapes and solid colors.

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  • Matplotlib

    The open-source Python library for static, animated and interactive charts, with free plot-type galleries, tutorials, cheat sheets and a full API reference.

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  • n8n

    A visual workflow tool for connecting apps and AI models — source-available, and free to run on your own server. Their hosted plans are paid.

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  • Ollama

    Open-source software that downloads and runs open AI models on your own computer, with a single command and an OpenAI-compatible local API. MIT licensed.

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  • Open WebUI

    A self-hosted, open-source chat interface for local or hosted models — chat history, documents, multiple users. Works on top of Ollama or any OpenAI-compatible API.

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  • OpenAI Whisper

    OpenAI's open-source speech recognition model and command-line tool, free to download and run on your own machine. MIT licensed.

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  • OpenClaw

    An open-source personal AI assistant, run on your own device, that connects to chat apps like WhatsApp, Telegram, Slack, and Teams to handle email, calendars, and everyday tasks.

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  • Opensource.com

    Free articles, tutorials and downloadable guides on open-source tools, Linux, containers and community-run projects, written by practitioners.

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  • php2shell-checker (OpenAI)

    OpenAI's open-source PHP version checker that warns when a website's PHP headers or a local installation advertise a version exposed to the PHP2Shell vulnerability, with Codex skills and a script to run directly.

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  • promptfoo

    An open-source tool for testing and red-teaming prompts and AI apps — run the same prompts across models, compare answers, and catch regressions. Free and self-hosted.

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  • PyRIT

    Microsoft's open-source toolkit for red-teaming AI systems: automated attack prompts, scoring of the responses, and repeatable runs. Free.

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  • Rust Programming Language

    The official home of Rust, with the free online book, guided tutorials, standard library docs and installer for a memory-safe systems language used across infrastructure and AI tooling.

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  • SearXNG

    An open-source, self-hosted search engine that queries other engines without tracking you or building a profile. AGPL licensed.

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  • SlopMonster

    A free open-source tool that scores AI-written copy for tell-tale "AI voice", rewrites it with a rival model, then re-checks it, so landing pages, READMEs and emails read like a human wrote them.

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  • The Linux Kernel Archives

    The official source for the Linux kernel, including release archives, the full kernel documentation and guides for submitting your first patch.

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  • The Open Frontier

    Benchmarks of open-source AI models by use case, with quality, cost and speed trade-offs.

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  • tldraw Chat Starter Kit

    A free working example of a chat app where you can draw to give an AI assistant visual context, with the code to build your own.

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  • Underdog — The Most Loyal AI

    A personal AI assistant for email, calendar, meeting notes, dictation and errands that runs 100% locally on your own device for privacy. Invite-only beta for Mac and Windows, with Linux, iPhone and Android planned. Backed by Andreessen Horowitz and Khosla Ventures.

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  • unslop

    A Claude Code and Codex skill for auditing AI-generated interfaces, proposing a design direction, and refining screens. The repository uses CC BY 4.0, requiring attribution; optional image services may cost money.

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  • whisper.cpp

    A fast, dependency-light rewrite of OpenAI's Whisper speech-to-text that runs on ordinary laptop hardware, including CPU only. MIT licensed.

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  • Xiaomi MiMo

    Xiaomi's open-weight AI model family — text, image, video, and audio understanding — released under the MIT license, free to download and self-host.

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  • Xiaomi MiMo (open models)

    Xiaomi's MiMo family of open language and reasoning models, with weights and technical reports published free for anyone to download and run.

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  • yt-dlp

    Free, open-source command-line tool for downloading video and audio from thousands of sites. Actively maintained on GitHub, runs on Windows, macOS and Linux, and is the tool most other download apps wrap.

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  • Zed Code Editor

    A free, open-source code editor built in Rust for speed, with built-in AI assistance, real-time collaboration and multiplayer editing for pair programming.

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