Urbit OS is a new, carefully architected software stack: a VM, programming language and kernel designed to run software for an individual.

Urbit OS is a program that runs on almost any cloud server, most laptops and many phones: anything with Unix and an internet connection. Urbit OS is completely sealed from the system it runs on, sort of like WASM or the JVM. We sometimes call it an ‘overlay OS’.

In an Urbit world, each person has their own Urbit OS node, or ‘urbit’. Your urbit is secure and private to you and entirely under your control. When you want to connect with others, you connect to their urbit directly — rather than going through a centralized service.