For backup, you could use duplicity or obnam, both of which gpg encrypt incremental backups. For file storage, you can use git-annex which gpg encrypts data st

For backup, you could use duplicity or obnam, both of which gpg encrypt incremental backups. For file storage, you can use git-annex which gpg encrypts data stored on rsync special remotes. I hope to add gpg encrypted git repositories to it soon too. Or tahoe-lafs, which encrypts files and allows sharing them by sharing a special url.