Selador is a browser-based fantasy game. The game was commercial at first, but has since been released as open source by its developers. The game focuses on teamplay and communication between players. Although it is played in real-time, strategy and planning are paramount. It comes with a nice set of graphics and a pre-populated database. It can be installed on any *AMP stack.
myparse is a low-resource database-oriented PHP framework. It aims to be easy for everyone use, update, modify, and extend. The working code base is less than 30 KB, and sites typically use around 400-700 KB of RAM. It is designed to work on shared hosting sites like DreamHost and GoDaddy. It supports full-page file-based caching, sitemap generation, Google Analytics integration, quick MySQL environment switching, and many of the newer MySQLi functions. The template system allows users and developers to define their own 'parsed' variables. Installation software is similar to, if not easier than, WordPress.
Git Manager is a Web interface for Git. It allows you to manage and create Git repositories, users, and access groups. It is based on Apache authentication mechanisms (HTTP or LDAP) and uses a MySQL database to store repo/user/group relation data. The ViewGit repository viewer is included.
FlatTraffic is a Web interface for analysing netflow records and showing statistics designed to make it clear and easy to determine which hosts on a network are consuming data. It has been primarily designed for use by networking and servers geeks who have to endure the pain of data-capped Internet Service Providers, something that's unfortunately rather common in the Australia/New Zealand region in particular.