The product is up to v2.4 on the developers website. Not sure why it hasn't been updated here. So far, I'm finding it to be a well designed product that gives me tabbed window behavior very similar to what was available in OS 9. I like it much better than minimizing windows into the dock because I can instantly see the window title, and the position of the tab does not change as I add/remove tabs from the border of the computer screen.