Tabs Studio v1.9.0 public is released – comparing to v1.8.5: fixed inability to display identical extensions in a tab group, removed unnecessary access to Visual Studio documents on tabs update.
Reminder for those upgrading from v1.8.0: previous versions of Navigator, Saver and Sorter add-ins don’t work with Tabs Studio v1.8.3 and greater. Here are the updated versions: Navigator v1.0.1, Saver v1.0.1, Sorter v1.0.2.
Tabs Studio Blog (organizing Visual Studio document tabs) 