Open Source AI Chat Projects
Conversational AI assistants and chatbot tools for answering questions, generating content, and automating tasks.

Hob
Free, MIT-licensed desktop AI assistant that runs open-weight models like Gemma and gpt-oss locally on Mac, Windows, and Linux.

Lobe Chat
Open-source AI chat and agent platform with multi-provider support, RAG, plugins, and an agent marketplace — self-hostable ChatGPT alternative.

Ollama
Get up and running with Llama 3.3, DeepSeek-R1, Phi-4, Gemma 3, Mistral Small 3.1 and other large language models.

Onyx
Onyx is an open-source AI chat and enterprise search platform with RAG that works with every LLM. Bring your own model, connect your tools, and unify all your team's knowledge.
Glean
Open Notebook
Open-source, privacy-first alternative to Google NotebookLM with multi-model AI support, podcast generation, and self-hosting.

Open WebUI
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)