CatMDEdit is a metadata editor tool that facilitates the documentation of resources, with special focus on the description of geographic information resources.
Open Journal Systems (OJS) is a journal management and publishing system that has been developed by the Public Knowledge Project through its federally funded efforts to expand and improve access to research.
DAITSS is a digital preservation software application developed by the Florida Center for Library Automation (FCLA) with some support from the IMLS. DAITSS is used by the Florida Digital Archive (FDA), a long-term preservation repository service provided by FCLA for the use of the libraries of the eleven publicly-funded universities in Florida.
LimeSurvey basically contains everything you need for doing nearly every survey with grace.
RT is an enterprise-grade issue tracking system. It allows organizations to keep track of what needs to get done, who is working on which tasks, what's already been done, and when tasks were (or weren't) completed.
The BookReader was developed by the Internet Archive and open source contributors to provide online access to scanned books. The Internet Archive has more than 1,000,000 scanned books available to read online. The BookReader is also used to provide access to materials from many other organizations.
MediaWiki is a popular free web-based wiki software application. Developed by the Wikimedia Foundation, it is used to run all of its projects, including Wikipedia, Wiktionary and Wikinews. Numerous other wikis around the world also use it to power their websites. It is written in the PHP programming language and uses a backend database.
Hydra is a multi-institutional collaboration to build a common, open source framework for multi-function, multi-purpose, repository-powered applications.