Have you looked at https://1password.com/ https://1password.com/? And it looks like https://www.enpass.io/ https://www.enpass.io/ has similar capabilities, but

Have you looked at https://1password.com/ https://1password.com/? And it looks like https://www.enpass.io/ https://www.enpass.io/ has similar capabilities, but I don't use it so I'm not sure exactly. 1Password keeps a local encrypted file. The "integrations" are 1Password knowing default locations to look to store the file in the right directory.