When comparing Yith Library vs Buttercup, the Slant community recommends Buttercup for most people. In the question“What is the best cross-platform password manager?” Buttercup is ranked 10th while Yith Library is ranked 28th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
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 Can be installed with home brew
Pro Open source
There's a large base of developers who work on improving the software.
Pro Import other formats
Import passwords from other password managers including 1Password (.1pif), KeePass(.kdbx), and LastPass (.csv).
Pro Good UI
Pro It's free
As in beer.
Cons
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.
Con Miss 2fa
Con Miss secure filling like Keepass
