@miguelnixon I'm not sure where you got the idea that Vivaldi stores passwords unencrypted but that is incorrect. Nowhere are passwords stored as cleartext by Vivaldi.
I think perhaps you are confusing the concepts of encrypting something and requiring authentication for access to something. Vivaldi, like many browsers and other applications, relies upon your operating system to authenticate access to its resources instead of writing its own authentication scheme.
Should you desire an additional layer of authentication in order to use your saved passwords, there are many extensions that provide this functionality, and several very popular ones that many people here use. Personally, I just don't bother with storing passwords, so I cannot give you a personal recommendation on those. If you start a new thread, however, asking for guidance, I'm certain the folks here would gladly help you choose one that suits your desires.
