nanograms is a logic game based on Nonograms also known as Hanjie,or Griddlers.

Cosmos Pictures offers an easy way tobrowseimages and videos of the Cosmos coming from NASA'sAstronomyPicture of the Day.

iPlantUML allows you to create UMLdiagramsfrom texts using the excellent PlantUML service.These texts must follow a simple and intuitive language,andiPlantUML gives you samples to help you.Once you have generated a diagram you can simply share it.