Powerline
I spent the day to look at tmux and vim and found a lot of great plugins. What I really like for tmux and also vim is powerline. Powerline is a status-line and prompts utility to change the look and feel of your vim or tmux status lines. It looks like this:
It consists of a special font, a python tool and plugins for applications. I’ve created package for Fedora and submitted a review request here.