Randomplay allows you to play your music collection in random order with a memory of songs played preserved across sessions, so you don't "lose your place" if you have to shut down. It also has many features to make command-line music playing more convenient, including recursive regexp searching for tracks and the ability to specify a certain number of tracks, bytes, or minutes to play. It can also generate a list of music files to be loaded onto a portable music player device.
Salonify is a Perl script which displays images that you have organized in a directory hierarchy. The Web user can choose to see photos as thumbnails or in small, medium, or full-size format; rotate the images; modify the captions; move from folder to folder or image to image easily; and customize the layout. The administrator can also take away any of these abilities from the user if they want. By default, the captioning is totally democratic (or wiki-like)--anyone visiting your site can change the captions. You can also lock this down. Salonify generates nearly w3c-compliant HTML (getting closer all the time) and renders quite well in all tested browsers, including w3m-img, lynx, Mozilla, Opera, Netscape, Internet Explorer, etc.. It uses JavaScript when available but does not depend on it, and makes special allowances for bugs in certain browsers.
Shorlfilter is a text filter that shortens long URLs using an online redirection database. It takes all HTTP links longer than a specified length and converts them to short links through the online shorl database. It is particularly handy for email, and can be used as a vim or mutt macro.