Free AI Tools for AI developer tools

Run multiple AI coding agents in parallel on isolated git worktrees with a full editor and built-in developer tools.

PokeTokenBar turns your AI coding tokens into a Pokémon companion in the macOS menu bar, tracking usage and gamifying evolution.

Open-source AI app builder that turns a prompt into a full-stack Next.js web app with built-in hosting, sandbox, database, auth, and more.

Caliber automatically generates and maintains AI context files for agents like Claude Code, Cursor, and Codex, keeping them accurate as your code evolves.

A maintained collection of agent skills for modern browser Web AI APIs including Prompt API, Language Detector, Translator, Writing Assistance, Proofreader, WebMCP, and WebNN.

Turn your AI coding agent into a finance and economy analyst with real-time access to official statistics and live market data.

Let coding agents see your browser by capturing screenshots of open tabs via a CLI and browser extension.

A secure file system and code execution sandbox for AI agents with built-in job queues, Docker isolation, and execution history.

An open-source Agent UI library in VanillaJS for building agentic front-end experiences with WebMCP, SSE streaming, and customizable theming.

A skill for coding agents that delegates coding, planning, review, and orchestration tasks to the zerostack CLI agent.

Run multiple AI coding agents in parallel on isolated git worktrees with a full editor and built-in developer tools.

PokeTokenBar turns your AI coding tokens into a Pokémon companion in the macOS menu bar, tracking usage and gamifying evolution.

Open-source AI app builder that turns a prompt into a full-stack Next.js web app with built-in hosting, sandbox, database, auth, and more.

A developer toolkit that provides a safe, reliable bridge between AI models and rich-text documents, enabling real-time, document-aware AI editing.

Caliber automatically generates and maintains AI context files for agents like Claude Code, Cursor, and Codex, keeping them accurate as your code evolves.

A maintained collection of agent skills for modern browser Web AI APIs including Prompt API, Language Detector, Translator, Writing Assistance, Proofreader, WebMCP, and WebNN.

Turn your AI coding agent into a finance and economy analyst with real-time access to official statistics and live market data.

Let coding agents see your browser by capturing screenshots of open tabs via a CLI and browser extension.

A secure file system and code execution sandbox for AI agents with built-in job queues, Docker isolation, and execution history.

An open-source Agent UI library in VanillaJS for building agentic front-end experiences with WebMCP, SSE streaming, and customizable theming.

A skill for coding agents that delegates coding, planning, review, and orchestration tasks to the zerostack CLI agent.

Polygraph indexes every repo you have access to and builds a graph of how they relate, enabling AI agents to plan cross-repo work without being told where to look.

Graphsignal is a production-scale inference profiling platform that helps engineers optimize AI performance across models, engines, GPUs, and other accelerators.

Caplets gives AI agents focused capabilities by turning sprawling MCP servers into progressive disclosure cards, reducing context usage and keeping schemas out of prompts until needed.

Crespo is an AI developer tool that generates compact XML blueprints of codebases using Tree-sitter AST parsing to provide LLMs with structural context.

ctx is a context-aware recommendation engine that dynamically selects the best skills, agents, and MCPs for your current coding task using a massive knowledge graph.

Conan is a native macOS app that provides a live HUD for Claude Code, surfacing prompts, tool calls, skills, and token usage in real time.

A locally-installed developer tool that provides a senior-level AI engineering partner inside your terminal, with local-first privacy and optional cloud sync.

Tempo is a code-first collaborative workspace that integrates AI agents for planning, designing, and building applications.

Weights & Biases is an AI developer platform for tracking experiments, managing models, and collaborating on machine learning workflows.

Cosmos is an enterprise agentic software development platform that coordinates coding, review, testing, and workflow automation at scale.

Gemini Code Assist is Google’s AI coding assistant for teams and businesses, offering code help, agents, and enterprise controls across IDEs and cloud tools.

Replit is an AI-powered platform for building, testing, and publishing apps, websites, and prototypes with coding and collaboration tools.

Anthropic is an AI company offering Claude models, developer tools, and safety-focused research and products.