One common question we hear from folks trying out the GitKraken Git GUI for the first time is “how do those Undo and Redo buttons work?” If you’re used to only using the CLI, or a GUI that simply runs Git CLI commands in the background, this might seem like some kind of weird voodoo. The real tech behind this, and all of GitKraken’s awesomeness, is not magic, but open source technology. The same open source technology powering many other Git projects.