A programmer's editor that supports color-coded syntax of the C# programming language. By C Point Pty Ltd.

A C# application generating software program that decrease development time for database enabled web applications. [Commercial]

A series of advanced collections and more than 50 generic algorithms that are designed to complement, not replace, the basic features found in the .NET Framework. [Commercial]

A refactoring, metrics and productivity add-in for Microsoft Visual Studio.NET.

A Visual Studio addin that converts VB.Net projects to C# projects. [Commercial, free conversion service for open source projects]

Clover.NET provides code coverage for .NET projects. Measures method, statement and branch coverage. reports in XML, HTML or via Visual Studio Plugin. A suite of NAnt tasks are provided. [Free for Open Source and Non-commercial projects]

A C# code generator. It produces code from a datasource and add managing persistance methods (Add/Modify/Remove) and create Visual Studio Project. It is easy and free.

An object database written in C# for the .NET platform. Also exist Java version.

An open-source C# compiler and libraries.

List of editors with C# support with reviews. Sorted by platforms and licenses.

Provides attribute-based declarative assertions, partial based code verification and obfuscation for C#. Free download.

Provides C# source for tools written in the tradition of lex and yacc, redesigned in an object-oriented way. By Malcolm Crowe.

Visually design plugins for HTML-Kit and automatically generate source code in .NET C#

Highly customizable free C# editor. Includes syntax highlighting and lookup of online and offline help references.

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 collection of classes written in C# and VB.NET.

A project to port SharpDevelop to Gtk#.

A software configuration library written in 100% C# for the .NET Framework. This software contains a concise API for abstracting the access of multiple configuration types: INI, .NET config files, registry, XML files, and command-line options. [Open source, MIT License]

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 & SDL along with some tools.

Object-relational mapping and code generation tool for C# generates 100% of the data access code. Auto generate wrappers for stored procuedures.

The PocketNerd Productivity Tool, an add-in for Visual Studio.NET provide a simple, flexible way of extending the Visual Studio.NET IDE to increase developer productivity.

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]

A template-based C#, VB.NET, and SQL code generator for multi-tier development. [Shareware]

Free C# editor.

A C# library for dealing with numerics on the .NET platform. It contains various mathematical structures such as vectors, matrices, complex numbers and contains methods for numerical integration, random numbers generation and other object-oriented numeric functions.

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

Generate C# source code and SQL Server stored procedures for entire data tier. Excellent performance without DataAdapters.

C# zip and streaming compression components for the Microsoft .NET framework.