Gundo - Visualize your Vim Undo Tree. Vim does have a bit more to offer when it comes to undo than usual editors - the entire tree of undo/do/redo actions is stored and you can move freely within it. However, no one really understands this with the normal Vim means. With the Gundo plugin, you can directly visualize this tree and perhaps make sense of it. Sure, you can achieve something similar through regular commits and version control. And of course, we all commit early and often and never have any long editing sessions, right?