This small size application is a free version of the famous Jigsaw Puzzle game and it has only the basic features such as creating a puzzle image from a picture, selecting the number of pieces (which is limited from 30 up to 1321 pieces) and removing option. You can select the color and the texture for your background too.
To keep track of many tray icons you may hide those that you don't need all the time. You can still access such hidden tray icons in the context menu of 12-Tray.
12-Tray will also restore tray icons after a 'crash' or restart of the taskbar (which in fact is displayed by the module explorer.exe, aka Windows shell). Usually the taskbar comes up after a crash without any tray icons. You had to stop and restart all related programs to restore the tray icons. Now, 12-Tray will restore tray icons automatically.