One Gram Software
Shamrock
FreeUnique Jigsaw Puzzle: Assemble Shapes Without a Picture
Windows
Amorphous Maze
Trial versionCreate unusual looking mazes that look as if they were hand-drawn.
Windows
KarnaughMap
Trial versionKarnaughMap: Interactive Boolean Algebra Tool
WindowsRobot University
FreeRobot University: A Challenging Block Fitting Puzzle
Windows