Business Logic Toolkit is a set of components to simplify .NET application development. BLToolkit is provided as source code that you can use "as is" or customize for your applications. It is written in C# and compatible with .NET Frameworks 3.5 and 4.0, Silverlight 4, and Mono....

A port of JTS to .Net, rewritten to take advantage of CLR constructs, as well as remove some of the legacy issues in JTS.

NSubstitute is a friendly substitute for .NET mocking frameworks.

It's like a stub with property behaviour.
With nice semantics for setting return values.
It only has one mode - loose semantics, which you can query afterwards.
It's meant to be simple, succinct and pleasant to use....

SMC - the State Machine Compiler

SMC takes a state machine stored in a .sm file and generates a State pattern in fourteen programming languages (C, C++, C#, [incr Tcl], Groovy, Java, Lua, Objective-C, Perl, PHP, Python, Ruby, Scala, VB.net). Includes: default transitions, transition args, transition guards, push/pop transitions and Entry/Exit actions....

The framework enables developers to leverage the power of object-oriented design as the basis for creating powerful applications. Business objects based on CSLA automatically gain many advanced features that simplify the creation of Windows Forms, Web Forms, WPF, WCF, WF and Web Services interfaces....

A Git implementation for .NET written in C#. The goal is to support all basic Git functions in managed code without relying on a 'git.exe' wrapper.

SDL.NET is a set of object-oriented .NET bindings for the SDL gaming library and provides high-level access to audio, keyboard, mouse, joystick, TTF fonts, various image formats, sound mixing, MPEG-1, 2D video framebuffer and 3D hardware via OpenGL.

NeoDatis ODB is a new generation Object Oriented Database. ODB is a real transparent persistence layer that allows anyone to persist native objects with a single line of code. Runs on Java and .net. The ODB runtime is less than 400k and is distributed as a single jar/dll that can easily be packaged in any type of application....

MindTouch Dream is a Web-Oriented Architecture Framework (WOAF) for developing lightweight, highly decoupled web-services.  The framework includes of a REST microserver and classes for web communication, XML processing, and writing highly asynchronous code....

The TV-Server (also mentioned TvEngine v0.3 sometimes) is an application which allows you to setup one or more central servers with multiple TV cards. Clients like MediaPortal can use the TV-Server to watch Live-TV/recordings/EPG over the network.

All TV related tasks are handled by the server(s) and Live-TV is streamed over the network to one or more clients. With the TV-Server you can setup a central server PC which will do all TV related tasks and use multiple clients on the network to view Live-TV and/or recordings....