Xceed Zip for .NET
Flexible zip compression library for .NET
Flexible zip compression library for .NET
OpenPGP for .NET with simple API.
VNCViewer SDK for .NET with repeater support.
.Net API for Google Code Issue Tracker v1.1
An RSS Library for .NET
An OPML Library for .NET
An ATOM Library for .NET
Robust FTP class library for .NET or ASP.NET
Aspose.Diagram is .NET library for MS Visio
Toolkit written in C++/CLI for.NET v.2 & up