Open source alternatives to ChatGPT
6 free tools that do the job of ChatGPT, most stars first. Of these, 5 are web apps you can run on your own server and 1 is a program you install on your computer.
6 alternatives
Sorted by most stars.-
Open WebUI
A self-hosted chat interface for Ollama and OpenAI-compatible models.
Web app
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NextChat
A light, fast AI chat app for web and desktop that works with many model providers.
Web app
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LobeHub
An AI chat framework with agents, plugins and many model providers.
Web app
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AnythingLLM
Chat with your documents using any model, in a private AI workspace.
Also an alternative to NotebookLM
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LibreChat
A ChatGPT-style app that works with many AI providers, agents and tools.
Web app
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Chatbox
A desktop AI chat client for your own API keys and local models.
Program you run on your computer
More alternatives in AI chat and search
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Ask us to add itAbout these numbers. Stars, dates and licenses come from GitHub through ecosyste.ms, collected on 10 Nov 2026; they can lag GitHub by a few days. A project is listed only if it has 300 or more stars, was updated in the last 12 months and states a license. A listing is not an endorsement, and we have not tested these tools on Antideploy yet. Logos belong to their projects and companies and are shown only to say which is which.