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AI Chat

Chat interfaces, AI companions, and conversational apps.

62 tools · 💎 50 hidden gems

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Start here

The most-starred projects in this category, plus a rotating pick of three more from deeper in the list — refreshed so the whole catalogue gets its turn in the window.

AI Chat

NextChat

✨ Zero-config AI chat assistant. No API key needed — sign up and instantly chat with GPT-5, Claude 4, Gemini 2.5, DeepSeek & 100+ top models. Pay-as-you-go s…

★ 88.8k starsMIT
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AI Chat

cherry-studio

AI productivity studio with smart chat, autonomous agents and 300+ assistants for frontier LLMs

★ 52.5k starsAGPL-3.0
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AI Chat

LibreChat

Enhanced ChatGPT Clone: Features Agents, MCP, Skills, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI…

★ 45.3k starsMIT
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AI Chat

fomo-robinhood-radar

Who the good traders on Robinhood Chain are buying: resolved wallets

★ 119 starsMIT
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AI Chat

nazuna

Bot entirely editavel, gratuita e descriptografada

★ 118 starsCustom
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AI Chat

discord-mcp

Open source Discord MCP server for Claude, Codex, Cursor and other AI clients

★ 112 starsApache-2.0
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About AI Chat tools

Chat interfaces are the front door to AI models: web UIs, desktop and mobile apps, and companion-style chatbots that connect to local models or hosted APIs. The open-source options add what commercial chats often lack — multiple providers in one place, your own system prompts, and conversation data that stays yours.

Some tools in this category are thin, elegant clients; others are full platforms with document chat, voice, and plug-ins. Because the interface is what you touch all day, small workflow details — branchable conversations, prompt libraries, keyboard flow — matter more than feature lists.

How to choose

  • Decide what the client must connect to: local models, one API provider, or several side by side.
  • If your chats are sensitive, choose tools that store conversations locally by default.
  • Heavy users should look for prompt libraries and conversation branching; casual users for the simplest install.
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Questions, answered

Which open-source AI Chat tools are listed here?

This page collects 62 open-source AI Chat projects curated by LibreAI — Chat interfaces, AI companions, and conversational apps. Each one is verified on GitHub and has its own guide page with an overview, install steps, use cases, and an FAQ.

Are these AI Chat tools free to use?

Yes. Every tool here is open source and free to download and use under its own license — most use MIT, Apache-2.0, or GPL-3.0, and any custom source-available license is flagged on the tool's page. Check the LICENSE file before commercial use.

Does LibreAI host these tools?

No. LibreAI publishes guides only — no downloads are served from this site. Every install comes from the project's official GitHub repository.

How do I install a AI Chat tool from this page?

Open the tool's guide and follow its 'Run it yourself' section — the steps come from the project's own documentation — or use the 'View on GitHub' button to go straight to the official repository.

How were these tools chosen?

Every project is verified live through the GitHub API — stars, forks, license, and recent activity — and listed only if it has real momentum and an active community.

Can one chat app talk to both local and hosted models?

Yes — many clients here are provider-agnostic: point them at a local runtime on your machine or at a hosted API with your own key, and switch per conversation. The guides note which providers each client supports.

Where are my conversations stored?

That is a defining difference in this category: several tools store everything locally by design, while platform-style tools may sync through an account. Each project's documentation states its model, and privacy-sensitive users should prefer local-first storage.