Cuyahoga is a flexible CMS / Portal solution written in C#. It runs on both Microsoft .NET and Mono and uses NHibernate for persistence Multiple databases are supported.
Library to generate SVG primitives from within ASP.net
Articles Viewer WebSite that is perfect for technology, social updates
A WebSite that is good for technology news and social webpages and can be used for many other goals like medical website or tech-blog
The CuyahogaContrib project contains non-core modules and extensions for the Cuyahoga web site framework that are developed and maintained by various contributors.
The phoenix kit is a collection of tools & working samples to create cross platform role playing games(RPG) of various types including massively multi-player online role playing games (MMORPG).
Popular multi-platform issue/bug/task tracker now with translations and switchable styles. Easy to setup and manage. Email notifications and attachment upload support.
iPFaces is a framework for easier development of applications for mobile devices, such as iPhone or Android. All mainstream server platforms are supported, such as Java, PHP and ASP.NET. Here you can download server packages for free.