BBSzilla is an extension for Mozilla-based browsers such as the Mozilla Application Suite and Firefox. It gives the browser the ability to connect to Bulletin Board Systems that utilize TCP/IP, such as Hotline servers. There is functionality for multi-user chat, single-user messaging, as well as server-side and P2P file sharing, threaded news, single-thread bulletins, and more.
Birch is a package of Perl scripts that runs a photo blog. It displays and archives photos with captions, and has an easy to use administrator interface that allows you to upload new photos and change the captions on old ones. It uses an XML file to store the photo information, so no database is needed. The installation page automates setup for you.
Globe*Trotter is a guestmap. It allows Web site visitors to mark where they live on a map and include their personal comments, instead of merely tacking their personal regards onto the end of a long list. It benefits your visitors because they can easily read other's comments and add their remarks in a fun and novel way. It also benefits you, the webmaster, because more people will be likely to give you feedback and you will be able to see where your visitors are. A free hosted version of Globe*Trotter (with no ads) is available.
JSpell is a server-based spell checker that allows you to spell check any HTML input field and form. It is i18n compliant and has dialogs for multiple languages available. It can be used to add spell checking capabilities to HTML forms on your Web site. This spell checker is compatible with JSP, ASP, CGI, PHP, Cold Fusion, Oracle Forms, etc.
KISGB is an advanced PHP guestbook program that does not require sessions, cookies, or an rdbms. It can be public or private through HTTP authentication. Features include message preview, message editing by users, a theme builder, private messaging, flexible logging capability, a Web-based password protected admin section, email notification, IP logging, IP banning, a bad word filter, smileys, automatic link recognition, flood control, support for 29 languages, and much more.