I used to install vim packages years ago. Now I just get by on what comes with vim, including colorschemes (elflord). It looks like I have four packages install

I used to install vim packages years ago. Now I just get by on what comes with vim, including colorschemes (elflord). It looks like I have four packages installed, and I don't remember what they're for. EDIT: it looks like I use nerdtree at work.