Giapeto is the Horde module for generating a dynamic Web site that is updatable by any number of users from a Web browser. It supports multiple levels of user permissions, the selection of templates that propagate to subpages, and linking to other Horde applications to seamlessly embed their content (such as the Jonah news/weather/stocks application, or user-created forms from Ulaform).
Pigalle (PIcture GALLEry) is a slick Web based photo album written in PHP 5. It makes it easy to create and maintain photo albums via an intuitive interface, as users need only upload their files to a server and let the program generate thumbnails for them. Visitors can choose their preferred image resolution and images will be generated on the fly. These generated images are cached and all meta-information such as album descriptions, image information, and user settings are stored in a database. A back-end administration interface helps to manage the files, edit the descriptions, and so on, making it very easy and convenient.
YaBook is a powerful PHP 5 guestbook that features easy installation and customization, multi-language support, an administration interface, moderation of new submissions, and URL obfuscation. Various database systems are supported. The script auto-detects a new installation and performs incremental upgrades if required.
Dolda Webmail (or d-mail for short) is a Webmail system written in PHP and interfacing with a back-end IMAP server. Advantages over most other projects of a similar sort are that it uses a persistant connection to the IMAP server (which increases performance on the Web server, reduces load on the network and on the IMAP server, and doesn't force the Web server to store the user's password in-core), and that it makes full use of XHTML 1.1 and CSS 2.