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Best Open Source AI Tools

Open-source AI gives you portable models, local runtimes, and auditable stacks. Explore high-signal projects here, then compare licenses and heat on the dedicated page.

Open compare table Related: Best Coding Agent Tools · Best LLM Chat Tools · Best RAG Tools · Best AI Image Generation Tools

Top tools

1,030 tools · sorted by quality

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taOS

Self-hosted AI agent OS. Your memory, chat, agents, and files stay on hardware you own, offline by default, cloud by choice. Offline AI memo...

Score 94 GitHub stars 548 Open source
real-world-rails

200+ production open source Rails apps & engines in one repo. Search across real codebases with AI agents to research architectural patterns...

Score 94 GitHub stars 541 Open source
aikit

🏗️ Fine-tune, build, and deploy open-source LLMs easily!

Score 94 GitHub stars 539 Open source
caura

Caura (formerly MemClaw) — governed shared memory for AI agent fleets. Multi-agent, multi-tenant, MCP-native. Trust tiers, keystone policies...

Score 94 GitHub stars 534 Open source
Agenvoy

Self-hosted AI agent harness in a single Go binary — writes, sandbox-tests and repairs its own tools, and lets Claude Code, Codex and any MC...

Score 94 GitHub stars 534 Open source
ai-data-extractor

Free open-source extractor for AI coding assistant chat histories. Supports Claude Code, Cursor, Windsurf, Aider, Cline/Roo Code, and more.

Score 94 GitHub stars 530 Open source
VectorHub

Deprecated historical repo. Superlinked now develops SIE, a self-hosted inference engine for embeddings, reranking, OCR, extraction, and doc...

Score 94 GitHub stars 530 Open source
plugNmeet-server

The open-source, self-hosted video conferencing software. Scalable, customizable, and with a powerful AI Meeting Agent.

Score 94 GitHub stars 526 Open source
rome

A compounding agent OS for recursive agents. Also an open source alternative to Grok Bot and Meta's Muse.

Score 94 GitHub stars 523 Open source
livecontext-ce

The AI automation platform, self-hosted. Describe the job in chat and LiveContext builds it: readable workflows, scoped AI agents, and small...

Score 94 GitHub stars 522 Open source
Claude-Code-Usage-Monitor

Windows taskbar widget for Claude Code, Codex, Cursor and more. Track usage limits and reset times. Free and open source.

Score 94 GitHub stars 521 Open source
awesome-gemini-3-prompts

♊ 50+ selected Gemini prompts with images, multilingual support, and instant gallery preview. Open-source prompt engineering library

Score 94 GitHub stars 521 Open source
Free-AI-Social-Media-Scheduler

Free open-source AI social media scheduler — self-hostable alternative to Postiz, Buffer, and Hootsuite with built-in AI content generation.

Score 94 GitHub stars 518 Open source
zinc

Zig INferenCe Engine — Local LLM inference on AMD GPUs and Apple Silicon

Score 94 GitHub stars 514 Open source
openclaw.net

Self-hosted Personal AI + agent runtime in .NET (NativeAOT-friendly)

Score 94 GitHub stars 513 Open source
restai

RESTai is an AIaaS (AI as a Service) open-source platform. Supports many public and local LLM suported by Ollama/vLLM/etc. Precise embedding...

Score 94 GitHub stars 513 Open source
pmg

PMG protects developers, AI agents from malicious open source packages using proxy, sandbox and SafeDep's threat intelligence feed.

Score 94 GitHub stars 513 Open source
mega

Mega is an open-source implementation of Google Piper — a Git-compatible monorepo engine built for the AI Agent era.

Score 94 GitHub stars 511 Open source
ollama4j

A simple Java library for interacting with Ollama server.

Score 94 GitHub stars 508 Open source
foremerge

Catch intent conflicts before code conflicts. The open-source coordination protocol for coding agents, built above Git.

Score 94 GitHub stars 505 Open source
samarium

Open-source business management system with ERP, POS, invoicing, and CMS features. Laravel-based, Docker-ready. Still in active development.

Score 94 GitHub stars 505 Open source
ITBench

An open source benchmarking framework for IT automation

Score 94 GitHub stars 505 Open source
ai-avatar-system

🎭 AI Avatar / digital human platform — upload a photo, clone a voice, talk to any face in real time with lip-sync video. Open-source, self-...

Score 94 GitHub stars 501 Open source
KeyType

An open-source Cotypist with macOS system wide AI autocomplete

Score 93 GitHub stars 499 Open source
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