AgateLib - Awesome game and tool engine library. A platform independent .NET library for developing games and game development tools. AgateLib is built on a driver-based model so that new platforms and rendering pipelines can be implemented easily.
BianLian Framework plan to establish a cross-platform, cross-language, JSF .NET like solution. To make all the GUI (both JSF .net and so on) INDEPENDENT to implementation. PS, BianLian is the famous Chinese art with about 1000 years history.
CUAHSI OpenHIS: Open Hydrological Information System is sponsored by National Science Foundation to develop infrastructure and services for the advancement of hydrologic science and education developed by Joe Hu,MapWindow software lab,Idaho State Univers
EpiHandy revolutionizes the way in which surveys and data collection is done in health and development research. Tap in respondents’ answers to questions accurately and quickly directly on the screen of any number of handheld computers.
hostingstar.com.au's open source software. To be used primarily for dotnetnuke modules, a cross platform backup system, .net (dotnet) user controls, 3d plugins and many other bits and pieces.