Company Kitestack Software created these great apps:
DesktopShelves, TaskBadges, DesktopShelves Lite, BIG Red Button, Link Radar, Link Radar Lite, Desktop Groups, Desktop Groups Lite, Flashcard Hero, Flashcard Hero, Flashcard Hero Lite, Explainer Screenshots, Text Blocks, Text Blocks, Boards - Personal Taskboards, and others..