Other popular options like Lastpass, Password Safe, or browser built-ins have known flaws or happily send your credentials to arbitrary third parties.
1. https://www.usenix.org/conference/usenixsecurity14/technical...
2. http://crypto.stanford.edu/~dabo/pubs/papers/pwdmgrBrowser.p...
https://www.zetetic.net/strip/
http://www.darkreading.com/risk-management/security-fail-app...?
https://media.blackhat.com/bh-eu-12/Belenko/bh-eu-12-Belenko...
Well worth the money, and I believe it has become cheaper now that they have freemium iOS app.
Before that I was using KeePass, which is great to use, but it is nice having the autofill, password generating, etc in the browser for you.
Linux/Mac/Windows clients. Some number of Android apps. that are compatible with the underlying file format.