Rautjoxa
Go. Apache License 2.0. Early development, nothing to install yet.
Rautjoxa is for people who want to keep every photo and video they take for life, at low cost, without trusting one company to keep them.
The app will encrypt each original on the phone, then store it in two write-once archives at two different companies. The archive is designed so that you can always restore it with the standard age and tar tools, without the app.
Today only the core exists: a Go package that writes and reads encrypted packs, and version 1 of the pack format. There’s no app and no release yet, so don’t use it to protect real data.