Command-T is an awesome vim plugin installed by default on the Pivotal workstation. There are some great keyboard shortcuts that make it even better.
Normally to use Command-T, you type leader-f, locate your file using the fuzzy finder, then hit <CR> (vim-speak for carriage return) to open it. But instead of <CR>, you can hit the following:
<CR> open the selected file <C-CR> open the selected file in a new split window <C-s> open the selected file in a new split window <C-v> open the selected file in a new vertical split window <C-t> open the selected file in a new tab
<C> is control. To learn more about Command-T, type
At the vim prompt. Thanks to my pair today, Ian Zabel, for showing me this stuff.