Bugzero is a Web-based change management and issue tracking system used in a distributed team environment to track software bugs, hardware defects, test cases, or any other issues. It can also be used equally well as a helpdesk customer support, trouble ticketing, or email management system to collect and manage customer feedbacks, incidents, requests, and issues. It is easy to use, but still flexible and adaptive, and can be configured to fit to your organization's unique business process and workflow.
Bumblebee is a system for managing instruments and other resources (e.g. analytical equipment) that must be shared between a number of users. Bumblebee is designed to be more efficient than a wall calendar or a whiteboard for both users and administrators. Bumblebee is also able to generate reports of resource usage with breakdowns by user, research group, and research project.
Discloser is (another) PHP/MySQL blog. It has a clean, effective interface. It differs from other weblog/journal/news/content management software in that "post types" are defined by plugins, allowing more intense customization capabilities. It is multi-user by nature, but only one user is required.
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.
MyHeadlines is module that adds syndicated headline functionality to any PHP and MySQL-based website. Your users may subscribe to multiple RSS feeds from a fully categorized database of over 1,000 sources. It was previously a PHPNuke/PostNuke Addon, but can now be integrated with any Web site.
Newsadmin is a simple news administration system that features news editing and several separate news editor/ administration accounts. News articles can have a news image that can be uploaded with the article (using news editing form). There is a news archive page for past articles. Long articles can optionally be cut on main view and read using separate readarticle "read more" page. This script can quite easily be customized to different needs.
PHPNews is powerful news publishing software. Features include, multiple users with 3 different types of access, archives, multi-language support, categories, comments, the ability to send articles to a friend, short and full bodied news, avatars, smilies, censor list, IP Banning, fully customisable templates, valid XHTML 1.0 Strict, valid CSS, and more.