This project gives you access to the code for upcoming releases that the ASP.NET team is working on, starting with the ASP.NET MVC Framework.

BlogEngine.NET is a full featured blog engine targeted at .NET developers. It is light weight and very simple to modify and extend.

I started this project as a way of learning C# 3.0, LINQ to SQL and ASP.NET 3.5. Right now it is deployed on my personal website http://sietch.net and I dare say it is working pretty well. I believe it has some potential to become usable by other people. It is supposed to be used as a system for personal websites and blogs.

BlueSky Framework makes it easier for .NET developers to develop ASP.NET MVC application.

Web library of reusable components and classes for ASP.NET, Silverlight and WPF Projects, containing image thumbnailers, helpers, behaviors, controls...

.NET library which enables minification, compression, combination, and caching of JavaScript and CSS resources for ASP.NET and ASP.NET MVC web applications. Simply put, it helps your applications rank better with YSlow and PageSpeed.

DataJuggler Controls consists of a series of C# projects containing Web Controls, Windows Controls and WPF controls to make data entry forms easier.

DNN® is the leading open source web content management platform (CMS) in the Microsoft ecosystem.

JaernCloud is a domain specific language for web apps. It uses a hierarchical type system called Closure Unified Documents to unify HTML, CSS and data transformations on the server-side into a single coherent programming language. Written in C# with the Dynamic Language Runtime.

Mefisto.NET CMS is a project of CMS, developed in ASP.NET MVC4, supporting modularity via MEF, and database access via ORM-Micro (github), a self-made solution.

This project adds additional functionality on top of the MVC Framework. It is written in C#. Founded by Eric Hexter and Jeffrey Palermo.

Class library to create dynamic forms in ASP.NET MVC.

The Open Source ASP.NET MVC Project that runs http://www.nerddinner.com and helps nerds and computer people plan get-togethers.

.NET HTML5 is designed for building hybrid HTML5 mobile, web and cloud apps within Visual Studio using classic .NET - Leverage existing skills and lower costs.

SharpNick is a DLL library containing functions that ASP.NET websites commonly use. Developed in C#.

Full ASP.NET shopping cart developed in C# using .NET 4.0 Dynamic Data and REST ADO.NET Data Services The project includes: Database scripts, Store front, admin CMS and a full Visual Studio 2010 solution. Social intergration with product comments and tag cloud control. Included is also Authorize.Net Advanced Integration Method (AIM), Paypal Pro API WCF integration and Google Checkout API

Sharply presented issue-tracker tool, very easy to use. Asp.Net 1.1 Web Application using custom ORM solution. Not yet ruined by too many features, but very simple codebase, so very easy to modify. The basic view is list of my tasks, organised by high/medium/low priority. A

This project allows the functionality of Microsoft's built in Web Site Administration Tool (WSAT) to be accessed from a regular old web page. This separates the need for Visual Studio to administer your web site. The Web Based WSAT tool allows you to create/manage users and roles

Visual WebGui is a platform for rapid development, quality & secure deployment. It is incorporated with an SDK which is integrative to Microsoft Visual Studio,

The Web Client Guidance from patterns & practices, assist developers and architects with the design, development and deployment of Rich Responsive Web applications using .NET.