Omeka is a standards-based web-publishing platform for the display of library, museum, archives, and scholarly collections and exhibitions. Its "five-minute setup" makes launching an online exhibition as easy as launching a blog. It is designed for scholars, museums, libraries, archives, and all cultural heritage enthusiasts.

Trac is a web-based project management and bug-tracking tool. It allows hyperlinking information between a computer bug database, revision control and wiki content. It also serves as a web interface to the revision control systems Subversion and Git. Among the users of Trac is NASA's Jet Propulsion Laboratory.

osCommerce provides everything you need to get started in selling physical and digital goods over the internet, from the Catalog frontend that is presented to your customers, to the Administration Tool backend that completely handles your products, customers, orders, and online store data.

LimeSurvey is a user-friendly web application that enables users to develop and publish surveys, and collect responses, without doing any coding. Users can use rich text in questions and messages, using a rich text editor, and images and videos can be integrated into surveys.