With the theme of passwords, some platforms have wanted to educate their users so that they know how to create a strong key, which is difficult to guess and detect.
Buttercup is a tool that they can occupy for that purpose. It is a software compatible with Mozilla, Chrome; But you can also download it for Windows, Linux or MacOS, Android and IOS. It uses the 256-bit AES encryption algorithm, which makes it one of the safest on the market.
Buttercup has unbeatable features, but unlike other similar tools, it allows to synchronize the devices where they have installed it. That is, if you have Buttercup on your Android and keep a password, it will not appear on the PC if they have installed.
This software allows to add several accounts from different files, some independent from others. And if you want your password manager to be more secure, then you will have the opportunity to create a master key, just to open that program or mobile app.