Free AI Tools for Open Source

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

Keeps your Mac awake only while AI coding agents are actively working, and lets it sleep when they finish.

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.

NanoEuler is an open-source GPT-2-style language model built entirely from scratch in C/CUDA with hand-written backprop, BPE tokenizer, FlashAttention, and training pipelines.

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

Open-source reliability testing harness for AI agent skills, computing pass@k scores across Claude Code, Codex, and Pi backends.

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

AI-powered open-source pipeline that converts diarized audio (podcasts, interviews) into YouTube-ready MP4 with semantic B-roll, burned subtitles, and optional voice synthesis.

Secure data room for sharing confidential documents with enterprise-grade security and analytics.

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.

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

Keeps your Mac awake only while AI coding agents are actively working, and lets it sleep when they finish.

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.

NanoEuler is an open-source GPT-2-style language model built entirely from scratch in C/CUDA with hand-written backprop, BPE tokenizer, FlashAttention, and training pipelines.

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

Open-source reliability testing harness for AI agent skills, computing pass@k scores across Claude Code, Codex, and Pi backends.

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

AI-powered open-source pipeline that converts diarized audio (podcasts, interviews) into YouTube-ready MP4 with semantic B-roll, burned subtitles, and optional voice synthesis.

Secure data room for sharing confidential documents with enterprise-grade security and analytics.

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.

An open-source CLI toolkit for simulating AI training math, estimating model size, memory, training time, and token budget.

Purr is a free, open-source, on-device voice-to-text dictation app for macOS Apple Silicon with no cloud round-trips.

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

Beautiful, AI-native markdown editor and LLM Wiki for creating and managing knowledge bases with AI assistance.

Browser-native AI content workstation that uses live webpage context and persona alchemy to generate targeted, multi-stage outputs, all running client-side with BYOK.

A transpiler from stateful imperative workflows to declarative DSPy programs for reliable, optimizable LLM steps with zero boilerplate.

Open source authorization engine for AI agents that provides confidence-aware gating, human-in-the-loop review, policy-as-code, and full audit trail.

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.

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

Alma is a local-first MCP server that gives AI agents a private, consent-based memory of your personal facts and preferences.

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

Skybridge is a full-stack TypeScript framework for building type-safe MCP apps and servers with React-powered UI.

OpenHuman is an open-source, personal AI super intelligence that offers a simple, private, and powerful agentic assistant with local memory and managed services.

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

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.

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.

Juno is a local voice layer for Mac that converts speech to clean text on-device, with voice actions, rewrites, and no subscription.

PII GUI is a local-first desktop application for detecting and redacting personal information in documents using regex and on-device ONNX models.

Claw Patrol is an open-source security firewall for AI agents that guards credentials, gates actions, and logs all traffic.

Memento is an AI tool that surfaces your important history from email, organizing it around people, projects, and topics that matter to you.

Free open-source desktop companion that runs a private AI backend on Mac/PC and connects MyLLM iOS app over trusted HTTPS via Tailscale.

MCP server for SharkClean / SharkNinja robot vacuums that enables agentic control via any MCP client: start cleanings, clean rooms, dock, and check status in plain language.

Local-first AI intelligence engine for macOS that builds private memory from screen OCR, email, and calendar, then provides proactive assistance and autonomous task execution.

Turn a folder of Markdown notes into a single self-contained HTML knowledge map with a themed force-directed graph, scrubable growth timeline, and click-to-inspect panel.

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

A security firewall that sits between AI agents and production, parsing wire traffic and gating actions with HCL rules.

Paca is an AI-native, free, open-source alternative to Jira, Trello, ClickUp & Monday, built for Scrum teams where humans and AI agents collaborate as equals.

Local-first, end-to-end-encrypted memory engine for AI agents that provides persistent, privacy-preserving memory across sessions, using Rust and MCP.

A service-boundary-aware coordination architecture for heterogeneous LLM code agents with versioned document store, pub-sub notifications, and diff-aware updates.

Save the conversations that matter from ChatGPT, Claude, Gemini, and Grok in one searchable vault encrypted on your device before anything reaches our servers.

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

A dual-arm robot platform for physical AI research and deployment, offering high reach, payload, and control rate for real-world manipulation tasks.

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.

Firecrawl is an API that enables AI systems to search, scrape, and interact with the web at scale.

Ollama is a platform for running large language models locally and scaling to the cloud, offering access to faster, larger models with parallel requests and real-time web information.

AutoGen is an open-source framework by Microsoft for building AI agents and applications with conversational and event-driven architectures.

A native macOS dictation app that turns your voice into text instantly. Local Whisper for complete privacy or Groq for real-time speed. No accounts. No friction.

OpenCode is an open source AI coding agent that helps you write code in your terminal, IDE, or desktop.

Zed is a fast, open-source code editor with multiplayer collaboration, integrated dev tools, and native AI-assisted editing.

Ghostty is a fast, GPU-accelerated terminal emulator for macOS and Linux with native UI, tabs, splits, themes, and modern terminal protocols.