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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

1,001 tools · sorted by quality

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speeedy

Free, open-source, local-first RSVP speed reader for PDFs & EPUBs. Fixed focal point to reduce eye strain, OpenDyslexic + Irlen support, bui...

Score 89 GitHub stars 55 Open source
FCAE_VPN

FCAE VPN — Open-source censorship circumvention VPN client, Supports Windows, Linux, macOS, and Android.

Score 89 GitHub stars 54 Open source
nautilo

AI goes multiplayer. A self-hosted workspace for people and machine people. Create, code, and work together across desktop, mobile, and web....

Score 89 GitHub stars 54 Open source
subpool

A lightweight, self-hosted AI subscription pool for teams.

Score 89 GitHub stars 54 Open source
MCP-Airflow-API

⚡ Control Apache Airflow with natural language via MCP. Chat with your workflows using Claude, GPT, or any LLM — no REST API calls needed....

Score 89 GitHub stars 53 Open source
SpecJudge

Local-first CLI that reads your Spec-Driven Development artifacts and recommends the best value-for-money AI model to implement them. Powere...

Score 89 GitHub stars 53 Open source
frai

Open-source toolkit for responsible AI: CLI + SDK to scan code, collect evidence, and generate model cards, risk files, evals, and RAG index...

Score 89 GitHub stars 53 Open source
pane

Pane tracker: all your AI plans in one Windows tray. Claude, Codex, Cursor, Copilot, Kimi, Grok and 15 more. Free, open source. The OpenUsag...

Score 89 GitHub stars 53 Open source
capd

Private, native macOS app to capture pages, text, notes, links, and images—and find them instantly with full-text search and OCR. Open sourc...

Score 89 GitHub stars 53 Open source
rewindos

A private, open-source alternative to Windows Recall — for Linux. Captures your screen, OCRs it, and makes everything you've seen instantly...

Score 89 GitHub stars 53 Open source
enikk

Open-source Computer Use Agent that works for Any App (GUI or CLI) by Any Model (Vision or Text).

Score 89 GitHub stars 53 Open source
openscenesense-ollama

OpenSceneSense Ollama is a Python library that harnesses AI for advanced local video analysis, offering customizable frame and audio insight...

Score 89 GitHub stars 52 Open source
HARTOS

An AI-native OS. Models run on your own hardware, nodes federate peer-to-peer with no broker, and the API is OpenAI-compatible. Boots, has i...

Score 89 GitHub stars 52 Open source
zuoge

zuoge — open-source AI design workspace with a document-derived SoA infinite artboard and Design Agent

Score 89 GitHub stars 52 Open source
kronos-agent-os

Kronos Agent OS (KAOS): self-hosted runtime for durable AI agents with memory, skills, MCP tools, automations, dashboard, and optional swarm...

Score 89 GitHub stars 52 Open source
OpenPipal

Open-source visual Agent client built on the Pi agent framework. No terminal required — connect a model and start.

Score 89 GitHub stars 52 Open source
session-orchestrator

A repeatable Plan, Go, Close workflow for AI coding sessions. Open source for Claude Code, Codex, Cursor and Pi.

Score 89 GitHub stars 52 Open source
doza-assist

Doza Assist Core — free & open source. AI editor's assistant that learns your style from your own cuts. Turn interview footage into rough cu...

Score 89 GitHub stars 52 Open source
wuu

Open-source BYOK AI coding agent with a desktop app, scriptable CLI, and built-in multi-agent orchestration. Written in Go.

Score 89 GitHub stars 51 Open source
taracode

DevOps & Cloud AI Assistant that runs locally with Ollama for complete privacy.

Score 89 GitHub stars 51 Open source
skim

A free, open-source AI email client for Windows that doesn't suck (that hard). ~5 MB installer, BYOK AI.

Score 89 GitHub stars 51 Open source
ortu

Free, open-source clipboard manager for macOS, Windows & Linux. Local-first clipboard history for text, images & files — instant search, pas...

Score 89 GitHub stars 51 Open source
Krill

Local-first terminal AI copilot - git-blame-aware answers, shell command suggestions, and repo digests through a local Ollama model

Score 89 GitHub stars 51 Open source
RAG-LangChain-AI-System

🧠 A production-grade, agentic RAG platform for portfolio intelligence, combining LangChain, Chroma/FAISS, Hugging Face embeddings, and Olla...

Score 88 GitHub stars 50 Open source
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