Open source ai-chat projects
Every project in the registry tagged ai-chat, ranked by real GitHub adoption.
Run open-source AI models privately on your own device
Unified AI-powered enterprise search across company data
The all-in-one local AI studio for your desktop: chat, image and video generation and a coding agent in one free, open source app. Windows and Linux. No Docker,
Multi-framework streaming Markdown renderers for AI apps: Vue/Nuxt, React/Next.js, Svelte, and Angular, with Mermaid, KaTeX, stream-diffs code blocks, safe HTML
AI Chat with powerful models for free
Turn AI conversations into organized, reusable workflows — across major AI platforms. | 把 AI 对话转化为可组织、可复用的工作流，适用于主流 AI 平台
React design system for agentic interfaces. Every free BoardUI component as source, with a working AI chat app on your own model key as the homepage.
One-click, privacy-first exporter for Claude.ai chats — clean Markdown with artifacts and attachments, ready for Obsidian and RAG.
Multi-Agent + Automation: Workflows, Automation, Self-Improving Agents
Copy AI conversations as clean Markdown Context Bundles — one click from ChatGPT, Claude, Gemini, DeepSeek, Grok & GitHub. Copy from sidebar without opening. Ze
Local AI chat for iPhone, iPad and Mac. Connect Ollama, LM Studio or any OpenAI-compatible server, or run MLX models on-device. Includes tools and web search.
Open-source, bring-your-own-key (BYOK) multi-model AI chat client for iOS, Android and the web. One LLM client for OpenAI, Anthropic, Google Gemini, OpenRouter,
Messaging SDK with AI agents for web, iOS, and Android
The AI chat app that sweats the details. Every top model, real memory, living documents, and your own tools.
Free, open-source alternative to ChatGPT Spaces: a self-hostable AI workspace for shared pages and conversations.
Related tags
Frequently asked questions
How many open source ai-chat projects are there?
This registry tracks 15 projects tagged ai-chat, with 124,370 GitHub stars between them. The most-adopted is GPT4All at 77,347 stars.
Are these ai-chat projects free to use?
Yes — 14 of the 15 carry an explicit open-source licence across 4 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which ai-chat project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these ai-chat projects still maintained?
13 of the 15 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.