benscott 

A pattern matching library in C#

Apache FOP, converted to .NET using IKVM

A small library of Winforms based dialogs and helpers

A template engine for the .NET platform which takes a DOCX file and applies a data object to generate reports, do mail merges, etc. No dependency on MS Word.

A class invariants helper library

Replacement/placeholder for System.Web

Reporting library that generates HTML, Excel and PDF reports from a single XML file

C#/.NET helpers - mostly extension methods

Razor example for crispin

Simple micro-ORM for SQL Server, with first-class support for dynamics and async/await

Markdown based statically generated wiki engine

A native C# library for generating SVGs

Chart generation using Giger

Nancy response helper for Giger

Nancy host helpers for Frankenwiki

Replacement/placeholder for System.Web