boahttpd
A C++ library to make your application be a cgi-featured http server
...That means you can easily add CGI support to your server application. Further more, it support filter and allows you to prevent unauthorized access. It's a multi-threaded server. Its written in C++ inside, but provides a C-Style API which you will find it to be Object-Oriented essentially. Multiple platforms are supported with a uqique set of interface, including Windows, Linux, or Embedded systems. It will take only a few minutes to get to know how to use it. It's suggested to started from the development manual.
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