Fluent Assertions is a set of .NET extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style test. We currently use it in all our internal and client projects, and it is used in many open-source projects. It runs on .NET 3.5, 4.0 and 4.5 (Desktop and Windows Store), Silverlight 4 and 5 and Windows Phone 7.5 and later. It supports the unit test frameworks NUnit, XUnit, MBUnit, Gallio, NSpec and MSpec.
Recursive descent LL(k) parser for .NET with Fluent API, BNF, EBNF and Gold Grammars
A set of extension to the CRM SDK to enable a more fluent interface.