JForum is complete, powerful, database-independent, and multi-threaded forum software. Features include unlimited forums and categories, topic watching, email notification, private messages, user ranking, an advanced permission schema, and moderation options. It provides support for many languages and customizable templates per user.
Gollem is a Web-based file manager that provides the ability to fully manage a hierarchical file system stored in a variety of backends such as a SQL database, as part of a real filesystem, or on FTP, Samba or SSH servers. It supports uploading and downloading of files, basic file operations, permissions support, and MIME recognition and viewing of files through the Horde MIME library. It is fully internationalized and translatable.
PmWiki is a WikiWikiWeb clone that is primarily designed as a tool to support easy, collaborative authoring and maintenance of Web sites. It does not require a relational database such as MySQL. It has advanced template capabilities, page grouping features, password protection for groups and pages, modular plug-in capabilities, and easy-to-customize wiki markup languages and tools.
The ATK Framework is a PHP business framework. It is targeted at developers who wish to focus on business logic instead of coding HTML. ATK provides a complete framework that requires only small amounts of code to get usable applications, while maintaining full flexibility. ATK has a model driven approach, but is 100% customizable.
MIMP is a version of the popular webmail client IMP intended for mobile phones and PDAs. Basic webmail functionality is implemented, including mailbox viewing and paging, viewing messages, deleting, replying, forwarding, and composing new messages. It utilizes the Horde Application Framework.