Open Source
Open WebUI is a fully self-hostable, feature-rich web interface for interacting with large language models, whether run locally through Ollama or accessed via any OpenAI-compatible API. It offers a polished, ChatGPT-like chat experience with support for document RAG, multi-user accounts, model switching, plugins, and voice — all without sending data to a third-party provider. With over 145,000 GitHub stars, it's become the default front-end of choice for people and teams running their own local or private LLM stacks.