On: Lesspass – open-source stateless password manager

[pkghost]

You can do this with your brain and a text file (for keeping track of counters and usernames). I've been managing my passwords this way for years.

[viraptor → pkghost]

You mean you've been making new, unpredictable passwords by tracking only the usernames and counters? You must be good at hashing ;) Seriously though: this is going to be relatively secure only if each counter increase gives you entirely random password.