graphviz is a set of graph drawing tools and libraries. It supports hierarchical and mass-spring drawings; although the tools are scalable, their emphasis is on making very good drawings of reasonably-sized graphs. Package components include batch layout filters and interactive editors for X11, Java, and a TCL/tk extension. The batch filters can be configured as a web visualization service (using GIF and click-maps). Typical applications include display of finite state machines, software diagrams, database schemas, and communication networks.
HTML Forms generation and validation is a PHP class that generates HTML forms supporting many built-in validation types on server and client sides. It prevents security attacks by discarding spoofed values, has multiple submit protection, outputs HTML for fields displayed as fully accessible or in read-only mode, and has field value filtering and reformatting. It can be extended with custom control plug-ins. AJAX based form submission, upload monitor progress bar, auto-complete text input, automatic layout renderer, calendar date, CAPTCHA, Google Maps world location selection, linked select, and animation effects plug-ins are available.
Html2Wml converts HTML pages to WML pages, suitable for being viewed on a Wap device. The conversion can be done either on the command line to create static WML pages or on-the-fly by calling this program as a CGI. Html2Wml's most interesting features are: automatic deck splitting, links reconstruction, and WML compilation.
HTML::Mason is a full-featured web site development and delivery system. Mason allows web pages and sites to be constructed from shared, reusable building blocks called components. Components contain a mix of Perl and HTML, and can call each other and pass values back and forth like subroutines. Components increase modularity and eliminate repetitive work. HTML::Mason is most powerful when used in conjunction with mod_perl, but can be used in standalone applications as well.
The HTML::Template module attempts to make using HTML templates simple and natural. It extends standard HTML with a few new tags for variables, loops, if/else blocks and includes. A file written with HTML and these new tags is called a template. Using this module you fill in the values for the variables and loops declared in the template. This allows you to seperate design (the HTML) from the data, which you generate in the Perl script. While there are many other HTML template systems available, this module is simple and fast. It doesn't try to reinvent Perl CGI, it just augments HTML with a few new and very useful abilities.
Ilib is an image manipulation library for developers. It's capable of reading and writing images (PPM/PGM, PNG, JPEG, GIF, XPM, BMP) and many drawing functions including drawing lines and text using any BDF (X11) font. It's great for generating GIFs/PNGs from a CGI or generating graphs. Ilib includes sample applications for generating graphs for HTTP access.log files and QuakeWorld server frag log files and a tool for creating image indices from a group of images.