Open WebUI

Open WebUI is a chat front end that runs on your own machine or server and connects to local runtimes such as Ollama and to hosted model APIs. It provides the interface a hosted chat product provides, without the conversation leaving your infrastructure. The feature set covers what a team expects from a chat interface: multiple conversations with history, model switching, prompt presets, document upload for retrieval, and web search integration. Multi-user support adds accounts and roles, so a small team can share one deployment with separate conversations and access to different models. It is a front end rather than a model runtime, so it needs something to talk to. The project is open source and self-hostable, and the tradeoff is operational: running it means running a container, a database, and whichever model backend it is pointed at.