Polygon and line clipping and offsetting library (C++, C#, Delphi)
The Clipper library performs clipping and offsetting for both lines and polygons. All four boolean clipping operations are supported - intersection, union, difference and exclusive-or. Polygons can be of any shape including self-intersecting polygons. 17 March 2016: Since it's been some time since the last update, some may be wondering if I no longer plan further updates. I do have plans for more updates but I also have a chronic health condition (not life threatening) that's set me back...
The CML (Configurable Math Library) is a free, open-source C++ vector, matrix, and quaternion math library designed for use in games, graphics, computational geometry, and related applications. Please note: the CML source has moved to GitHub: https://github.com/demianmnave/CML
C++ Template Libraries: Biscuit Parser Library, Ketchup Message Map Library, Egg Functional Library, and Oven Range Library
client and server HTTP(S) library for Boost C++ developers
The motivation of pion is not to build yet another web server or web application framework, but to help provide basic HTTP(S) functionality to new or existing C++ applications. If you're working on a Boost C++ application and would just like to use HTTP to provide a simple user interface or interact with run-time data, then pion might be for you.
Interval Container Library (ICL): An STL based generic library for computations on intervals, interval containers and cubes