AI Chat
4 open source tools compared. Sorted by stars — scroll down for our analysis.
| Tool | Stars | Velocity | Language | License | Score |
|---|---|---|---|---|---|
 Open WebUI Self-hosted AI interface for LLMs | 128.6k | — | TypeScript | — | 72 |
 LibreChat Enhanced ChatGPT clone with multiple AI providers | 34.9k | +235/wk | TypeScript | MIT License | 79 |
| 908 | — | Python | — | 39 | |
| 596 | — | TypeScript | — | 40 |
Our Analysis
Open WebUI is the ChatGPT interface you self-host. Connect it to Ollama, OpenAI, Anthropic, or any compatible API and get a polished chat UI with conversation history, RAG, function calling, and multi-user support. 128K+ stars make it the most popular LLM frontend by far. Chatbot UI was an early alternative but stalled. LibreChat supports multiple providers with a similar feature set. Text Generation WebUI focuses on local model control. For commercial, you're replacing ChatGPT/Claude's own interfaces. If you're running local models with Ollama or want a unified chat interface across multiple LLM providers, Open WebUI is the best option available. The feature velocity is incredible — voice, video, PDF editing, tools. Docker deployment takes minutes. The catch: the license recently changed from MIT to a custom license with restrictions on commercial use. Read it carefully. Also, the pace of development means breaking changes and config migration headaches between versions. And it's a resource-hungry Python app — don't expect it to run well on a small VPS.
LibreChat is a self-hosted ChatGPT interface that connects to every major AI provider — OpenAI, Anthropic, Google, Mistral, local models via Ollama — in one unified UI. Switch between Claude and GPT-4o mid-conversation. Keep your chat history on your own server. Pay only API costs instead of $20/month subscriptions. If you're an indie hacker using multiple AI providers, LibreChat saves money and gives you data control. The API pricing model usually beats fixed subscriptions. Open WebUI is the main competitor — better for local-only setups with Ollama. LobeChat has a slicker UI but less provider support. Typing Mind is a polished paid alternative at $79 one-time. The catch: You need to manage your own deployment — Docker, database, auth. The UI, while functional, changes frequently between releases. And you're still paying API costs, which can surprise you if you're not watching usage. There's no built-in spend tracking.