mod_perl lets you write Apache modules entirely in Perl. In addition, the persistent interpreter embedded in the server avoids the overhead of starting an external interpreter and the penalty of Perl start-up time. hot
Apache::Wombat is a connector for the Wombat servlet engine that embeds the engine in an Apache web server built with mod_perl.
mod_cgi turns CGI program into a dynamically loaded library (.so) and runs it without forking. Gives the simplicity and portability of CGI without the overhead.
mod_haskell is an Apache extension that makes it possible to write Apache modules in Haskell. This is accomplished by integrating the Hugs Haskell interpreter into Apache. Apache modules have two advantages over conventional CGI scripts: they are faster (by eliminating script startup time) and have full access to the Apache API.
mod_haydn is an Apache module which allows you to embed MSIL bytecodes (the foundation of Microsoft's CLR) into Apache. Allowing you to access all of Apache's API from any CLR enabled language.
mod_lua is a content generate module for Apache2. It can run in two modes based LUA, One is full lua script, another is lua-html mixed. Both not need any CGI process, just like mod_perl or mod_python,but more lighter, because based embed LUA.
mod_ocaml is a flexible apache module for use of the powerful OCAML interpreter as a web scripting language.
mod_python embeds the Python interpreter within the server. With mod_python you can write web-based applications in Python that will run many times faster than traditional CGI and will have access to advanced features such as ability to retain database connections and other data between hits and access to Apache internals.
mod_scheme isa scheme module for apache 2.x webserver. It embeds the tinyscheme interpreter.
mod_sed is an apache module that embeds a copy of the sed command. This means that you can automatically filter data without having to spawn a CGI process.
Spyce is a drop-in Apache plugin that supports simple and efficient Python-based dynamic HTML scripting. It can also be used as a command-line utility for HTML pre-processing.