I know a bunch of people here have mentioned Bitwarden, but I would like to mention one feature that makes it superior to all others. You can integrate it to services like SimpleLogin, AnonAddy, Firefox Relay, DDG etc. and auto-generate email aliases within the Bitwarden extension. In theory it is more secure to not do this but it is such a huge QoL feature to just hit the randomize button in the extension to create an alias for a new login. It also populates the info field on simplelogin with something along the lines of “Auto-Generated by Bitwarden for: [website]”