After rolling out its password manager to a limited number of users in April, Proton has finally released the service to the general public. The tool, called Proton Pass, uses end-to-end encryption to keep your usernames and passwords away from third parties, including Proton itself. It also lets you create and store randomly generated email aliases that you can use in place of your real address.
For me it is not acceptable for password manager not to be opensource, client and server and they can provide service for syncing.
Companies can be nice, but also can be sold to anyone at anytime.