FUDforum is a super fast and scalable discussion forum. It is highly customizable and supports unlimited members, forums, posts, topics, polls & attachments. It can import XML Feeds and sync with USENET groups and Mailing Lists (bi-directional).
A Club member administration tool written in PHP using a MySQL database. Clubdata is highly configurable, supports different membership types, a lot of membership features, mass e-mails, Excel-export, PDF-export and sophisticated authentication. Club
ANts P2P realizes a third generation P2P net. It protects your privacy while you are connected and makes you not trackable, hiding your identity (ip) and crypting everything you are sending/receiving from others.
TFTgallery is a PHP based web image gallery which doesn't need a database. It uses the directory structure for data storage. The main features are: an on-the-fly thumbnail creation, PDF and ZIP creation, image calendars, EXIF support
hylaPEx is a client for hylafax totally written in python. It can read and view the sended and received fax. Support either tiff and ps/pdf formats. Can use redmon for create a virtual fax print. Support shared contacts with a mysql db.