TurnerSoftware 

An "Entity Framework"-like interface for the MongoDB C# Driver

A multi-layered caching system for .NET

Provides Distributed Locking & Eviction for Cache Tower

Use Redis for caching with Cache Tower

Robots.txt parsing and querying utility

A sitemap (sitemap.xml) parsing and querying library in C#

MongoFramework integration for MiniProfiler

A simple but powerful web crawler library

Use JSON serialized files for caching with Cache Tower

Use MongoDB for caching with Cache Tower

Use Protobuf serialized files for caching with Cache Tower

Basic temporal parsing for C#