Urbit is an operating system and a peer-to-peer network of personal servers on the cloud. The system was built from the ground up and consists of three components: Urbit OS (Arvo), which functions as a personal computer; Urbit ID (Azimuth), which employs an Ethereum-based PKI for ownership of network identities; and Urbit Network (Ames), which facilitates peer-to-peer communication. Together, these components forge an integrated toolkit for community-focused networking that inherently precludes ads, tracking, or centralized data capture. Open source and decentralized, Urbit simplifies computing to offer durability, privacy, and digital autonomy.