1) Dotnetnuke
The most widely adopted Web Content Management Platform for building web sites and web applications on Microsoft .NET. Organizations use DotNetNuke to quickly develop and deploy interactive and dynamic web sites, intranets, extranets and web applications. The DotNetNuke platform is available in a free Community and subscription-based Professional, Elite and Elite Premier Editions. The open platform allows DotNetNuke to function as both a content management system (CMS) and application development framework. DotNetNuke allows your organization to leverage your existing Microsoft investments to create rich, highly interactive web sites and web applications.
2) Mojoportal
You can think of mojoPortal as a Starter Kit for Advanced ASP.NET Web Sites and Portals. Out of the box, mojoPortal provides dynamic database driven web site(s) with an XHTML compliant Content Management System and community features like Blogs, Forums, Image Galleries, etc.
3) Umbraco
Umbraco makes it quick, easy and fun to develop web applications. Umbraco features an easy to use framework for working with dynamic content and javascript called umbraco Base. The umbraco Base framework enables developers to create simple urls to umbraco content and .NET resources, making it much easier to work with .NET-based data directly from any javascript framework, like jQuery, YUI, Prototype or whatever library you prefer to use.
4) Cuyahoga
Cuyahoga is an open source .NET web site framework. It provides content management capabilities and has a modular approach. Currently it works with MS .NET 2.0-3.5 with SQL Server, PostgreSQL or MySQL as database backend. Also, Mono is fully supported.
5) N2CMS
For those looking for an out of the box experience N2 CMS contains a package of functional templates with News, Wiki, Photo Galleries, FAQs, RSS, Data Entry, Polls and more. With these you’ll be up and running no time (demo). The functional templates are completly optional. If you want you can just use an adaptive editing interface that integrates quite nicely into any ASP.NET code. Features include full control of content and nodes, drag & drop, versioning, wizards, export/import, security, globalization and more.
6) Thebeerhouse
TheBeerHouse is a website developed with Microsoft’s MVC Framework which includes a number of features and modules that you expect from a typical CMS / e-commerce website, such as: Membership system with registration, login, profile setup and complete administration, Content management system for publishing and syndicating articles and photos, with support for categories, comments, rating and profile-based personalization, Opinion polls with support for multiple active polls and archived polls etc.
7) Kooboo
Kooboo CMS allows you to create a professional website efficiently without losing out on product quality. Based on the ASP.NET MVC system that you are familiar with, and our easy-to-use tutorials and quick response forum provide clear instruction and support to give you confidence to unleash your creative potential.