Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized. Your data is your data alone and you deserve to choose where it is stored, if it is shared with some third party and how it's transmitted over the Internet. Written in Go.

(Beta) file synchronization tool similar to Syncthing, with some significant differences. Namely, the actual data doesn't need to be synced. It's decentralized, and you can choose to download the data, or just the metadata. And then if you click a file you haven't downloaded, it'll just try and get the file from whoever does have it. Syncthing is great, but it requires everyone to have the files.