Open alternatives7
Open-source apps that replace ChatGPT, Claude and more

LibreChat is a self-hosted chat app that lets you talk to many AI providers, such as Claude, OpenAI and Google models, from one interface. It is for people and teams who want to run their own AI chat server and keep control over it.

Jan is a desktop app that lets you download and run AI language models on your own computer, with an option to connect to cloud AI services. It is for people who want an AI chat assistant with more control and privacy.

Chatbox is a desktop app that lets you chat with AI assistants like ChatGPT and Claude, using your own API key or a local model. It is aimed at people who want an AI chat window on their computer, Windows, Mac or Linux.

YouCoded is a free AI assistant app for Windows, macOS, Linux and Android that can also be opened from a web browser on your network. It is aimed at students, professionals and anyone who uses AI regularly, and lets you pick which AI model powers it. Made by itsdestin, a r/TrueOpenSource moderator who also runs this site.

Ollama is a free tool that runs AI models on your own computer, so your chats stay on your machine. It now has a simple chat window, and other apps can also use it to run models.
AnythingLLM is an app that lets you chat with an AI assistant about your own documents, and can run models locally or connect to cloud AI services. It is aimed at people and teams who want a private, self-hosted or desktop alternative to ChatGPT-style chat tools.
Leon is a personal AI assistant that runs on your own computer and can use tools, memory and your local context to complete tasks. It is aimed at people who want an assistant that can work locally and keep more control over their data.
What's missing
What people still miss here, and wish existed. Upvote what matters to you.
Before you build
Planning something for AI chat apps? See what exists first, so you can reuse parts or explain what's different. Paste this into any AI assistant:
Fix the list itself
A project or closed app missing from this list, or a mistake on it? These open a short form on GitHub, and a mod reviews it. To say what a project can't do, use What's missing.
About this page
Replaces fully means it does the main job of these apps; Replaces partly means it covers some of it.
Licenses: every project here uses an open-source license (what each one means). Open core means some parts are paid or under another license.
GitHub stars are shown for reference. They measure popularity, not whether it replaces anything.
Verified means r/TrueOpenSource mods checked it: open-source license, maintained, and it really does the job.
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