What is gitk?

Gitk is a visual tool for browsing the history of a Git project. Instead of reading through lines of text to understand what changed in your code, it displays your project's commit history as a graph, making it easy to see how different branches and tags connect to one another. At a high level, you simply open it in your project folder. By default, it shows the entire history of your codebase, but you can also point it at a specific file or folder to see only the changes affecting that area. You can even ask it to show a specific branch or a range of changes, like everything that happened between version 1.0 and version 2.0. This tool is meant for anyone who uses Git to track their work but finds the standard command-line interface confusing or hard to navigate. For example, if a founder or product manager wants to see how a feature evolved over time, they can open this tool to visually trace the timeline of changes. It turns a flat list of text updates into a map, helping you quickly spot where a branch split off or where different people's work merged back together. The project is built using Tcl/Tk, a technology for creating desktop graphical interfaces. Because of this choice, it runs as a native application on your computer rather than in a web browser, and it requires the Tcl/Tk software to be installed on your system to function. It is a long-standing part of the broader Git ecosystem, even accepting contributions through the official Git developer mailing list.