open-webui/open-webui

open-webui/open-webui delivers the cleanest self-hosted web interface for interacting with language models, with 136,555 stars proving developers are eager to escape vendor-locked chat UIs. It supports any OpenAI-compatible API, giving you full control over your AI front-end without monthly fees. This project outperforms #10 langchain-ai/langchain in popularity by over 170 stars, showing a stronger community pull toward self-sovereignty. In fact, it is 100% free from proprietary restrictions, unlike typical hosted solutions that charge per token.