Chromium Iteration Viewer is a free Chrome add-on developed by Chromium OS Developers. This add-on allows users to easily track the current Chromium Week, Phase, and Iteration when looking at the issue tracker.

With Chromium Iteration Viewer, users can stay up to date with the latest changes and progress of the Chromium project. The add-on provides a convenient way to view the current Week, Phase, and Iteration information, ensuring that users are always aware of the project's status.

Please note that the Chromium project no longer uses iterations, making this add-on obsolete. Users are advised to uninstall it if they no longer find it useful.

Chromium Iteration Viewer, originally written by Andrew de los Reyes, has undergone several updates and improvements over time. The latest version, 5.0, now handles new Phase/Week information instead of Iteration. Previous versions included enhancements such as adding a popup and handling daylight savings, as well as fixing URL matching and rewriting the iteration logic.

Overall, Chromium Iteration Viewer is a useful tool for those who want to keep track of the Chromium project's progress, but it is important to note that it is no longer actively maintained due to changes in the project's development process.