Note: There are a lot of implementations of KeePass that surpass the original in quality.

KeePassXC is likely the one that's best for most people who wish to go down the standalone application route: https://keepassxc.org/docs/#faq-keepassx

Since quite a while ago now, Tails switched from KeePassX to KeePassXC: https://tails.boum.org/doc/encryption_and_privacy/manage_pas...

So if you're still on KeePass, KeePass2, or KeePassX - consider upgrading to KeePassXC.