Ranorex is a software testing tool that allows you perform functional testing on desktop, web or mobile applications. It supports many user interface (UI) technologies that includes Java, .NET, HTML, C#, Flex/Flash, Android, iOS and Silverlight.
xUnit.net is a free, open source, community-focused unit testing tool for the .NET Framework. Written by the original inventor of NUnit v2, xUnit.net is the latest technology for unit testing C#, F#, VB.NET and other .NET languages. Works with ReSharper, CodeRush, and TestDriven.NET.
EZNamespaceExtensions.Net is a framework for fast, painless and easy development of Windows Explorer namespace extensions in .Net. Namespace extension development is notorious for its difficulty, subtleties and for the sheer amount of work and time that is required. With EZNamespaceExtensions.Net's simple and well-designed API, you can concentrate on writing the functionality of your namespace extension and not worry about the hundred things that are necessary to integrate the namespace extension seamlessly into Windows Explorer and File Open/Save Dialogs.
SisoDb is a document-oriented db-provider for Sql-Server written in C#. It lets you store object graphs of POCOs without having to configure any mappings. Each entity is treated as an aggregate root and will get separate tables created on the fly.
Integrate spell checking into any WPF application. RapidSpell WPF can also be used in non GUI contexts using it's spell checking API. Written for WPF in C#, RapidSpell offers 5 English dictionary variations, Medical and non-English dictionaries are also available...Visit keyoti.com for details.
Add-in Express Regions for Microsoft Outlook and VSTO is an extension of Visual Studio Tools for Office 2008 and 2010 that enables you to create view and form regions on Outlook Explorer and Inspector windows.
StringTemplate is a java template engine (with ports for C# and Python) for generating source code, web pages, emails, or any other formatted text output. StringTemplate is particularly good at multi-targeted code generators, multiple site skins, and internationalization/localization.