Diagramo - Diagramo is an online flowchart software - diagrams (create, edit and share)
Lexica - An open source word-search game.
Modelio - Modelio is an open source modeling tool supporting natively UML, BPMN and model exchange with XMI.
Crosswords Arena - Word game, multiplayer and computer players
UML Designer - UML Designer provides a set of common diagrams to work with UML 2.5 models.
Word Domination - Word Domination is a fast paced and addictive real-time word game.