OpenCity is 3D city construction simulator. You can build some zones of housing, trading and industry, electric plant and roads. Besides you can also raise or lower the terrain. OpenCity is similar in spirit to other city construction games, heading towards a classic SimCity feeling, although with some additional features. It is not intended to be a clone of any famous city simulator.

pySioGame is a set of educational activities and games for children aged between 3 and 10. The activities are grid based and can be played all in a single window. pySioGame includes maths, reading, writing, painting, and memory activities.

Amazons is a game played on a 10x10 chess board. Each side has four pieces (amazons) that move like chess queens (in a straight line in any direction). Instead of capturing pieces like in chess, the game is determined based on who moves last.

WSJT is designed to facilitate Amateur Radio communication under extreme weak-signal conditions.

synfig is a vector based 2D animation package. It is designed to be capable of producing feature-film quality animation. It eliminates the need for tweening, preventing the need to hand-draw each frame.