Library for Javascript and PHP that you can use to create familiar dropdown menus like in desktop applications. ZZEE DHTML Menu is fairly easy to install and embed into your existing HTML or PHP pages, it is customizable, powerful and simple.

Free tool for creating HTML meta tags, which can allow your web pages to be properly indexed by search engines.

DzSoft Perl Editor is a popular tool for writing, editing, and debugging Perl/CGI scripts. It has a comfortable and intuitive interface both for beginners and advanced programmers. DzSoft Perl Editor is deceptively simple, but really powerful.