Umbrel is a company that sells Umbrel Home and Umbrel Pro home-cloud servers and develops umbrelOS, a browser-accessible operating system for self-hosting. Its platform lets users store files and media locally, run AI models and agents, automate homes, manage networking, and install hundreds of self-hosted apps through the Umbrel App Store. It also supports personal Bitcoin and Lightning Network nodes, enabling users to connect wallets directly to their own infrastructure.