I started a command line tool to manage your references called Zoia a little while back. I found Zotero to be a bit cumbersome for what I wanted so I decided to write something of my own. I got it to a semi-working state with some basic functionality, then got busy with other things. But I still like the idea and would like to flesh it out if I ever get the time.

https://github.com/joe-antognini/zoia