DSkinLite is a powerful gui library to help you develop the user interface program. And we use dskinlite in our current project, so we will optimize it continually. It is a "lite" gui library,and use the xml file to describe how to skin...
Yet Another C/C++ library for CGI programming. Simple and easy to use tool for CGI programming in C/C++. Can be used free as long as credit notice is given online; Otherwise a license can be purchased.
Webtools is a C++ class library and set of CGIs which combine the functionality of Groundwork, SQLRelay, and popular scripting languages to provide some commonly-needed tools for building Web-based applications.
A multiplatform C++ library for CGI programs, that isolates the webmaster and the webdesigner.
tiCGI is an easy-to-use CGI interface for C programs. CGI functionality is included via a header file. Due to its simplicity, programmers won't have to work through piles of documentation.
HTML form parser for GET and POST in C. Includes source code. Very simple interface. Call one function to return form data as strings, then use atoi to convert the data, etc.
A high-speed, cross-platforms C++ string class and associated parsing classes.
qDecoder is a CGI library for C/C++ programming that gives developers a simple library interface without regard to the method of GET or POST.
Groundwork is a C++ class library for writing Web-based applications. Functional highlights include multi-part form handling, an IP-based security system, simple logging, runaway CGI catching, a load balancing system, hooks for embedded scripting usi
C++ class Supports POST, GET, FILE UPLOAD ,ISINDEX ,IMAGEMAPS. Allows INPUT TYPE=IMAGE to be a imagemap. Allows INPUT TYPE=SUBMIT to have button text seperate and other than the VALUE. | 
