The official Firely .NET SDK for HL7 FHIR
Apache Log4net is a versatile, feature-rich, efficient logging API
Libraries, samples and tools to help .NET Core developers
Awesome icon packs for WPF and UWP in one library
JavaScript engine for .NET written in C#
HSharp is a library used to analyze markup language like HTML
Official binding of SFML for .Net languages
A re-implementation of Freelancer
A node.js library for testing modern web applications
Cross-platform C++ library for use as a default application framework.
A port of WFOPT to the .NET Runtime
A port of WFOPT to the several scripting languages
Library offering classes to read from and write to spreadsheet formats
Aglyph is a Dependency Injection framework for Python.
Myth Framework Core Libraries (part of MythSDP)
Solution Framework
Object-oriented generation of HTML code on .NET 4 Client Profile
UML 2 Statemachine for C++ is a development framework with DSL support
Platform-level utilities on .NET Framework 4.0 (C#)
Command-line application library