Sync stuff you care about with people you know.

Earthstar is a specification and Javascript library for building online tools you can truly call your own.

A share is a collection of data — messages, blog posts, photos, anything — synchronised across the devices of its users.

Your data is here for the long haul. Everyone keeps a working replica of their share, so servers are just a nice-to-have.

Interact with your documents however you want: through home-cooked browser apps, command-line interfaces, or native apps.

This project was funded through the NGI Assure Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 957073.