Geoportal Server is a standards-based, open source product that enables discovery and use of geospatial resources including data and services.
Contineo is a Web-based Document Management System (DMS). Features: Folder organization, document Versioning, Bulk import, import from mailbox. NOTE: this project has been DISMISSED in favor of LogicalDOC http://sourceforge.net/projects/logicaldoc
DLESE (Digital Library for Earth System Education) is a community-supported digital library dedicated to the collection, enhancement, and distribution of materials that facilitate learning about the Earth. Sponsored by the US National Science Foundation.
Digital Learning Sciences (DLS) is a mission-centered, not-for-profit organization dedicated to improving learning through the use of digital content and tools.
It is a search engine using Lucene and wordnet. It is basically for analysis of query expansion. Lucene and wordnet are really wonderful tool. It make life much easy.
Portalian is a large scale portal CMS with TRUE portal look like yahoo(US), aol(US), goo(JP), daum(KR), and sina(CN), etc. No more portal CMS with amateur look!