LassPass (Free with lite)- Online Service keeps your password in cloud.
1password (Paid App)- Nice for Mac/iOS, also work on Windows, not have version on linux.
Keepass - Open source and cross platform.
Why I Switched From LastPass to 1Password: It’s More Than Just About Password Management
LassPass keeps your password in cloud. 1password keeps in your local machine that your can backup it on dropbox or personal account of cloud storage.
LastPass vs. KeePass: What’s the Best Online Password Management?
LastPass offers the convenience but KeePass have better security.
How To Use kpcli To Manage KeePass2 Password Files on an Ubuntu 14.04 Server
Install on OSX via Homebrew
$ brew install kpcli