metarmask

.bibisco2 are really just zip files which PhotoRec can find, if you want to use that. Good luck.

Bibisco2 is a JavaScript app, unlike version 1. It seems .bibisco2 files are only created when exported, otherwise it’s in a database somewhere. You can add custom formats in recovery tools like TestDisk and Photorec. I could look around and see if the database or the bibisco2 export files have a header, which I think is required to add a format.

Edit: Nevermind, there’s a paid version which creates bibisco2 files automatically.