Free open-source plugin for Eclipse (itself a free and open-source development environment) with syntax highlighting, content assistant (intellisense for C# keywords), and ability to compile code from within the IDE.

Convert VB.NET code to C# code at the project and code snippet levels. Description, sample screenshots, and ordering information. By Tangible Software Solutions Inc.

A project to port SharpDevelop to Gtk#.

Intel Labs C# implementation of portions of the CLI (Common Language Infrastructure) runtime library as defined in the draft ECMA CLI specification.

Provides C# wrapper for OpenGL and SDL along with some tools.

A standalone profiler for C# that measures execution frequencies for each statement while keeping the instrumentation of the source code to a minimum. [Open source, GPL]

Free C# editor.

Generates the data access layer for C# application and the database schema from within Visual Studio.NET .