And-httpd is an HTTP server that maps URLs to files. In other words, in can take an incoming URL and map it to a file in a number of ways (for example, according to content type or language). It can also do authentication or IP based ACLs. It cannot do CGI or other kinds of code execution. It cannot even dynamically create directory listings (although it comes with external tools to do so automatically, and to create a "status page"). It currently has a $2000 "security guarantee" against remote attacks.
CPPSERV is a Web application server / servlet container that provides a Servlet-like API to C++. It also contains CSP (C++ Server Pages) functionality, similar to pre-compiled JSP. It consists of stand-alone application server and Web server front-ends. Modules for Apache and lighttpd are available.
Conteg is a PHP class to negotiate the current HTTP request response for Web output. It issues full Response headers and can change the server response depending on the Request headers sent (as Apache does for static files). This can be used to avoid sending cached content that is up to date. It can also be used to serve load-balanced compressed output. The entire class is implemented in a single file, and only three lines are needed to use the class.
Embedded HTTP Server (EHS) is a C++ class which can be inherited from to give HTTP server functionality to any class or application. It supports form data via POST or GET, setting and reading cookies, and uploads via multi-part form attachments. It is useful for adding Web-based administration or statistics to any C++ program. It also supports HTTPS for doing secure transactions.