Python for Delphi (P4D) is a set of free components that wrap up the Python DLL into Delphi. They let you easily execute Python scripts, create new Python modules and new Python types. You can create Python extensions as DLLs and much more.
by Sam Lantinga in C++ Libraries for C++Builder
Simple DirectMedia Layer is a cross-platform development library designed to provide low level access to audio, keyboard, mouse, joystick, and graphics hardware via OpenGL and Direct3D. It is used by video playback software, emulators, and popular games including Valve's award winning catalog and many Humble Bundle games.
by Apache Xerces™ Project in C++ Libraries for C++Builder
Xerces C++ is a validating XML parser written in a portable subset of C++. Xerces makes it easy to give your application the ability to read and write XML data. A shared library is provided for parsing, generating, manipulating, and validating XML documents.