OpenLegacy is a powerful, lightweight, extensible, and flexible Java-based API framework and tools for building applications and services over existing legacy applications. This is commonly known as legacy modernization or application modernization.
Encuestame is a survey management system. It's integrated with the most popular social networks, including Facebook and Twitter.
pgGallery is a Web-based photo gallery powered by PostgreSQL and Spring.
A music typesetter, based on the ABC language.
A CalDAV Web client.