I've used KeePassXC, and I think it's the best KeePass variant. I don't like stock KeePass because it's horribly slow under Mono (Linux/OS X). And I like but am not as satisfied with KeePassX because it lacks some features I like. From what I recall, the maintainers of KeePassXC got frustrated with the feature set and development pace of KeePassX, so they made their own fork. And they added nice things like TOTP code generation (i.e. Google Authenticator style) and YubiKey support.
I can't yet wean myself off of LastPass though, just because it's synced everywhere and is more reliable when doing form fills on websites. For example, KeePass and its variants don't have a concept of equivalent domains. For "equivalent domains" I should be prompted with the same lists of auto-fillable credentials, such as:
LastPass gets this right, but I sadly haven't seen any other password manager that does. I think there's an open issue with KeePassXC to address this but it's not merged or production ready.
With KeePassXC you would do this by adding new entries for each alias and then reference the username and password values of the "base" entry. I believe the feature still isn't in a release, and the UX isn't there at the moment.
The problem is that they can't deviate from the official KeePass database format, so adding something like aliases requires hacks like the above.
With KeePass you create a new entry for the domain, then make it refer to the original to avoid duplication of user/password. But yes: allowing one single entry to be used for multiple domains would make much more sense.
KeepassXC does not support the latest kdbx 4 format which was recently released with Argon2 support. (which is supposed to be more secure). It will be supported in the next release 2.3.0. So for now I use Keepass until it supports kdbx 4 then I will move back. It has no plugins though compared to keepass.
Other than that it has better gui if that is your thing (Keepass is ugly). It is mostly a fork of keepassx which is still usable but KeepassXC merged all pull requests and fixed a load of bugs in keepassx after the maintainer stopped maintaining. Try it. It works. It also has mutilple releases (snap, appimage etc.).
