libpropc++ (for C++) 

Template library for properties in C++ (used like 'widget.color = "red";). In class Widget use: prop::PropertyWidget, Color, &Widget::set_color, &Widget::get_color color; Binding properties to auto-synchronize their values.
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Windows Std Serial Comm Lib for C/C++ 

C/C++ serial communication component library for C++ and .NET programmers. Control multiple ports simultaneously; also works with MFC and C++ Builder. Includes modem control, ANSI emulation, ASCII/XMODEM/YMODEM. Does not depend on support libraries.
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quickdb 

Quickdb is a light database engine which resides in memory and which permits you to have a very versatile database engine for C++ programs. Quickdb does not rely on any other package, can be delivered in a dll and is compatible with XML.
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