Interesting Elm/Elixir project.
NoKey is a distributed password manager that works without a master password.
Instead, you can unlock your passwords by confirming from another device. E.g. if you need a password on your PC, you only have to confirm this on your phone. No need to remember any passwords!
https://www.reddit.com/r/programming/comments/8s8kh5/nokey_a_distributed_password_manager_without_a/