So it does, yes. I forgot about that, since I needed to write my own wrapper to paste both username and password (stored on separate lines) anyway. Thank you for the correction, I'll update my post.
There is also QtPass (GUI around pass), and various browser extensions (e.g. BrowserPass).
Of course one has to set it up, it's not an integrated solution. But GPG provides interesting features like storing encryption keys on hardware devices. Some devices like Yubikeys can have touch-to-use enabled. So each use of a secret requires a touch (after PIN but that's once a session). Perfect combination of convenience and security for me.
- There's no builtin GUI
- Each entry is its own file
- You control the storage format (meaning it's easy to store any kind of information, not just passwords)
- It relies on GPG, so you need to set that up first