When comparing Yith Library vs LessPass, the Slant community recommends LessPass for most people. In the question“What is the best cross-platform password manager?” LessPass is ranked 10th while Yith Library is ranked 32nd.
Ranked in these QuestionsQuestion Ranking
Pro Allows setting up own server
Yith Library's server code is available on Github along with instruction on how to set it up. It requires enough knowledge to set up and run a server in a virtual Python environment.
Pro Passwords are encrypted client-side
Yith Library uses client side JS encryption to ensure that passwords never travel in clear text.
Pro Free and open source
Yith Library is licensed under AGPL with source code available on GitHub.
Pro Open source
Pro Really platform-free
Pro Doesn't store passwords
If it's not stored, it can't be stolen.
Con Poor user experience
Yith Library is confusing. It's hard to navigate, it ask for permissions without explaining why or how those permissions will be used, none of the UI elements are explained and the language is iffy at best.
Deterministic password managers have many drawbacks.
Con Cannot store existing secrets
Existing secrets (aka passwords) cannot be stored with deterministic password managers. In order to use LessPass effectively, you will need to change your password on every site.
Con Easily cracked with exposed/compromised master password
Since anyone can use LessPass with the same parameters as you, all they need is your master password (which could be obtained through keylogging or numerous other methods) to gain access to every one of your site passwords.