Free AI Tools for Developer tools

Polygres combines PostgreSQL hosting with native graph traversal, HNSW vector search, and hybrid retrieval APIs for AI agent workflows.

TryCase gives your coding agent a disposable Linux desktop to run your app, test it like a user, and send back proof: screenshots, recordings, and logs.

An AST-powered, local-first CLI that visualizes complex system architectures and enforces architectural boundaries via instant Git hooks.

Review your rendered markdown site like a Google Doc: select a passage, comment, and an AI agent resolves it into a clean git diff. Local-first, in-browser.

Terminai wraps your terminal to provide on-demand access to AI agents with read and approval-gated write access.

Web scraping and crawl API that provides markdown, HTML, brand data, images, and structured data extraction for AI agents.

A terminal emulator that captures every AI agent exchange, tags it, and indexes it for cross-agent search, keeping your memory on your machine.

A personal blog and research site for Solidity smart contract development, offering insights and code examples.

Contextify keeps a private, searchable timeline of Claude Code and Codex sessions forever, with local AI summaries powered by Apple Intelligence.

A platform for building and running durable AI agents with managed sessions, event logging, and automatic crash recovery.

Polygres combines PostgreSQL hosting with native graph traversal, HNSW vector search, and hybrid retrieval APIs for AI agent workflows.

TryCase gives your coding agent a disposable Linux desktop to run your app, test it like a user, and send back proof: screenshots, recordings, and logs.

DocsAlot turns scattered product knowledge into polished, agent-readable documentation and AI visibility audits for onboarding.

An AST-powered, local-first CLI that visualizes complex system architectures and enforces architectural boundaries via instant Git hooks.

Review your rendered markdown site like a Google Doc: select a passage, comment, and an AI agent resolves it into a clean git diff. Local-first, in-browser.

Terminai wraps your terminal to provide on-demand access to AI agents with read and approval-gated write access.

Web scraping and crawl API that provides markdown, HTML, brand data, images, and structured data extraction for AI agents.

A terminal emulator that captures every AI agent exchange, tags it, and indexes it for cross-agent search, keeping your memory on your machine.

A personal blog and research site for Solidity smart contract development, offering insights and code examples.

Contextify keeps a private, searchable timeline of Claude Code and Codex sessions forever, with local AI summaries powered by Apple Intelligence.

A platform for building and running durable AI agents with managed sessions, event logging, and automatic crash recovery.

A transparent proxy that shows every real tool call between your AI client and MCP servers, live in your terminal.

Mirrors turns your production traces into an isolated copy of your agent's environment so you can test changes safely.

An open-source CLI for fast local search across your past coding agent sessions.

N71 gives all your AI agents one shared context by maintaining a living knowledge graph connected to your tools, so every agent stays current without re-explaining.

Build production-ready full-stack apps from a prompt with built-in auth, database, and deployment—now with native mobile support.

Extract web data and automate browsers via a single API call, no scraper required.

Behavioral infrastructure for humanlike AI agents, providing APIs and models for social intelligence in group interactions.

A feature-rich Pomodoro timer that lives inside the Claude Code terminal, keeping focus without context switching.

A macOS app that keeps AI agent essentials like Claude and Codex sessions, token usage, and permissions visible in your Mac notch.

Local-first memory for AI coding agents. Automatically stores and recalls project context via MCP, offline, with ~35ms recall.

Kage is a git-native verification layer for coding agent memory that checks every claim against your code to prevent hallucinations and stale facts.

Vibe-zsh is an AI-powered Oh-My-Zsh plugin that transforms natural language into shell commands using any OpenAI-compatible API.

An open protocol for capability-aware AI routing, plus a reference router that routes between local and cloud AI models based on task, cost, and latency.

Open-source alternative to Claude in Slack: self-hosted AI agent that reads threads, answers questions, calls tools, and renders rich results.

A drop-in proxy that routes every prompt to the best AI model in <50ms, cutting costs 40-70% with just an endpoint change.

A local-first MCP gateway that reduces token usage by ~90% by exposing 3 meta-tools instead of hundreds, working across all major AI clients.

Lightweight, themeable AI chat widget for websites built with vanilla JS, supporting streaming, voice, tool calls, and a plugin system.

Diffen.ai is an AI-powered code review tool that reviews Pull Requests, finds issues, and automatically fixes them, pushing changes to a new branch.

peerd is the first AI agent harness native to the browser, allowing AI agents to drive tabs, run sandboxed compute, and share peer-to-peer with no backend.

A CLI tool that converts web pages into compact text accessibility trees for LLMs to automate browser interactions efficiently.

HALO is a methodology and toolkit for recursively self-improving AI agent harnesses using RLMs and production traces.

A read-only Markdown and HTML reader for macOS, purpose-built for reviewing AI-generated documents in development workflows.

Oak is an agent-native version control system with a lazy working tree, JSON-first CLI, and branch management designed for AI coding agents.

Per-block model routing CLI that sends tagged prompt sections to different LLMs for optimized AI coding workflows.

A self-hostable workspace where humans and AI agents collaborate in shared rooms over a Nostr relay.

Fully-local project memory for Claude Code that automatically captures session activity and provides a concise summary, entirely offline without API calls.

Respan is an LLM engineering platform that provides a unified gateway to route, trace, evaluate, and monitor AI agents and LLM calls.

Automate social media posting and integrate with your favorite tools using Buffer's GraphQL API.

A local, zero-dependency dashboard for Claude Code that provides live token usage, context monitoring, lost-session recovery, full-text search, and phone-based approval of tool calls.

Hosted MCP server builder that converts REST and GraphQL APIs into AI-accessible MCP endpoints with authentication and workflow tools.

Velane is an open source AI agent code runtime that connects to your IDE via MCP, enabling autonomous creation, testing, and deployment of workflows with 800+ integrations.

Free, micro AI code reviews that run on git commit to prevent outages, breaches, and technical debt.

A Go-native framework for building, orchestrating, and observing AI agents with native OpenTelemetry observability and a self-hosted dashboard.

AIsa provides a single API key for AI agents to access 1000+ LLMs, APIs, and skills with autonomous micropayments.

ZCode is an AI-powered coding IDE by Zhipu AI that integrates intelligent agents for planning, coding, code review, and deployment with deep reasoning capabilities.

A local-first code-intelligence tool that turns any codebase into a queryable knowledge graph for AI coding agents.

OLO Robotics is a browser-based robotics development platform with built-in AI-assisted coding, simulation, and ROS2 tools for faster robot building.

Spotlight by Backplanes reads your Claude Code and Codex sessions to give you session reports that help you get recursively better.

Agentcad is an open-source MCP server and CLI that enables AI coding agents to design, render, and export CAD output directly from their coding environment.