SeeSharpShip is a free and open-source shipping library written in C# that wraps popular U.S. shipping APIs like USPS, UPS, FedEx and DHL.

ShareX is an open source program that lets you take screenshots of any selected area with a single key, save them in your clipboard, hard disk or instantly upload them to over 25 different file hosting services. ShareX can capture screenshots with different shapes: rectangle, rounded rectangle, ellipse, triangle, diamond, polygon and also freehand. It can upload images, text files and all other different file types. It is able to capture screenshots with transparency and shadow. The program also supports clipboard upload and drag-and-drop....

Phonetics is the name of a sceince that deals with converting words to sound values, so you are able to compare words with each other on there pronunciation.

To make things easy Triple Software developed a set of phonetic functions and packed them in a nice library, for free....

A collection of FxCop rules: Immutable attribute checking, Exception processing and IDisposable checks.

CityLizard Framework allows developers to design strong typed XML and verified HTML using C# language. The project inspired by LINQ to XSD and Sharp DOM.

A TortoiseSVN issue tracker plug-in for integration with JetBrains YouTrack 3.0,

A C# and Java parser generator (compiler compiler) with support for LL grammars.

Rich Browser Platform provides tabbed web browser by default and plugin architecture. So everyone can extend for one's purpose under CC License (http://creativecommons.org/licenses/by-nc-sa/3.0/).

Now, 0.3 supports IronPython.

A smart framework and extensions to create powerfull applications using .NET 2.0 or later (3.0, 3.5, 4.0 etc.) and C#. MS SQL 2000, 2005 and 2008 and soon MySql 5+ can be used as database but it's not required for small apps.

Google Analytics for Windows 8 applications,