MyXaml
MyXaml offers developers declarative markup capabilities to your .NET 1.1 and 2.0, and ASP.NET applications using a markup language called XAML (pronounced as "Zamel"). This new technology will give developers and end users alike the ability to use an XML-based approach to dynamically define and use the application's interface.

NDigester
NDigester is the .NET implementation of the Jakarta Commons-Digester tool providing full control over XML documents processing.

SAX for .NET
SAX is the Simple API for XML, originally a Java-only API. SAX was the first widely adopted API for XML in Java, and is a de facto standard. Read more about it on the website of the SAX project. SAX for .NET is the port of SAX to C#.

Saxon.NET
This work is an effort to convert the existing Java-based code of the open-source Saxon 8.0-B processor to C#.NET.