Fistbump & WhisperThe Linux builds are plain tar archives of the application bundle — nothing installs system-wide, and removing the folder removes the app. x86-64 only for now.
Install
Substitute the filename you actually downloaded; the version in it moves with each release.
tar -xzf fistbump-0.1.9-linux-x64.tar.gz
cd fistbump-0.1.9-linux-x64
./fiducia_fistbumpWhisper is the same with whisper in the names. Move the folder wherever you keep applications — ~/Apps, /opt, anywhere.
Verify your download first
Compare the SHA-256 against the value on the download page before the first run. For an authenticator and a password manager this is not ceremony: a tampered build of either is the worst outcome there is.
sha256sum fistbump-0.1.9-linux-x64.tar.gzWhat the vault needs
The vault's device key lives in your desktop's keyring through libsecret, which is present on any GNOME or KDE desktop. On a minimal window-manager setup, install gnome-keyring — or another Secret Service provider — or the vault cannot stay unlocked between launches.
GTK 3 is the only other requirement, and every mainstream distribution ships it.
No sandboxed formats yet
Flatpak and AppImage packaging are planned; the tarball is deliberately the first Linux shape because it adds no packaging layer between you and the signed checksum above.