An Apache module for developing web applications using Lua
mod_pLua is a module for the Apache httpd web server, that enables the use of preprocessed (html-embedded) Lua scripts using a PHP-like syntax as well as CGI-style interfacing, but at a much faster pace. For a more detailed description, see the wiki: https://sourceforge.net/p/modplua/wiki/
ChemVisio is software which might be useful for educational purposes (non-organic chemistry, crystallography etc.). It might be a good visualization support for all people who need better illustrations than that you could see in books.