When comparing Buttercup vs eWallet, the Slant community recommends Buttercup for most people. In the question“What is the best cross-platform password manager?” Buttercup is ranked 10th while eWallet is ranked 26th.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
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.
Pro Reliable and can easily sync with clients on phone/tablet and PC
Pro Cloud sync
It can sync the passwords between all used devices via DropBox.
Pro Multi platform
Runs on Mac, Windows, iPhone and Android.
Pro Local password storage
It can store the password safe on the local computer (not in the cloud).
Pro Can sync between platforms without using Cloud
Syncing from laptop/desktop to phone and tablet (without using the cloud features).
Cons
Con Miss 2fa
Con Miss secure filling like Keepass
Con Closed source
Due to it is closed source and the encryption implementation is not documented you have to trust the developer.