webring is a Web-based application that will allow you to create your own "web ring" site. It comes with an easy install page which will create the MySQL tables and data for you. It includes a built-in search engine to find pages which are included in the webring, and it includes many features for allowing users to join your web ring and start viewing similar sites. It automatically generates code to put a menu bar on an end user's site for joining the web ring, rating pages, etc.
wepidia is a set of two PHP files which allow you to browse through an entire picture collection, located in the same directory or in the subdirectories as the two files. It also offers the ability to add comments to the pics, for which it uses a MYSQL database. The files are highly configurable, and very easy adjustable. Other features include a location bar, customizable colors, and relocation of the layout.
werkmail is a browser-based mail client written in php. It handles imap and pop3 mail servers. It supports attachment sending and viewing, cc and bcc fields, replying, forwarding and deleting mail. It is not necessary that the host serving werkmail and the computer the mailbox is located on are the same machine. The user can connect to werkmail (and to his mailbox) from every computer in the world that has an internet connection and a web browser.
Wordcircle is a program for teachers or professors and their students. Teachers can log in and create courses and give a course key to to their students. Courses consist of these parts: an overview, a calendar, discussion groups, course materials (files and links), and a robust project module for students to publish work and enter journal entries.
wp-popeye (Popeye) presents images from the Wordpress media library in a nice and elegant way within your posts and pages. Use it to save space when displaying a collection of images and offer your users a simple way to show large versions of your images. It is based on jQuery.popeye and does not employ a disruptive modal window to display large images, allowing all thumbnails and the large images to be browsed in a single image space. It also repects the page flow and stays anchored and rooted in the Web page at all times. The plugin is very easy to set up and integrates automatically into your posts, or allows you to use a shortcode. It comes with several styles but can be also easily customized.