[bsimpson]

Atom has git integration built-in? I couldn't find it when I tried it a few months ago (and I was shocked, considering it's sponsored by GitHub).

[shurcooL]

Yes. When you open a directory that is a git repository, the files in the sidebar will have different color if they're modified, new, etc. When viewing actual files, edited/new/deletes lines will also have markers in the gutter.