KeePass/KeePassX has always been solid, you can even create a server which holds the encrypted .kdbx database, and those with the key manager connect as if clients.
BitWarden is open source and popular at my current client. You didn't specify your platform, but I took a look at BitWarden's macOS app and it seems to be some sort of hybrid app. Definitely not as good as 1Password, but that one isn't open source and has a monthly cost.
What are your requirements?
good UX and as secure as possible. I use Mac OS X and iOS
1Password has been bug free in my case, however I can't speak for security (it's closed source). How do the security-heads around here feel about it? Has it been debunked yet?