Hello Darren, I have recently proposed (and sent a first version of) a CGI parameters parser for Boost.Program_Options. It obviously does not cover all what a complete CGI library can handle (it's not the goal) but permits to retrieve parameters just the same way as you would do with command line or config file parameters using Program_Options. And it takes advantage of the fact that this library already has some useful features like conversion into different data types. http://lists.boost.org/Archives/boost/2008/04/135607.php If you decide to release your CGI library into Boost, this CGI parser for Program_Options could become a simple binding to your code, providing a different way to easily access CGI parameters for people who don't need more advanced features. Regards Bruno