The Apache Open For Business Project is an enterprise automation software project that includes ERP, CRM, E-Business/E-Commerce, SCM, MRP, and CMMS/EAM functions. It is a foundation and starting point for enterprise solutions and can certainly be used out of the box, but is also great for creating specialized applications.
Chandler is a standards-based "Note-to-Self Organizer" designed for personal and small-group task management and calendaring. It consists of a desktop application and Chandler Hub, a free sharing service and Web application. You can also download and run your own Chandler Server.
Daisy is an enterprise content management solution, bridging the gap between classic Web site content management and the Wiki style of information management and discovery. It is ideally suited for intranet knowledge bases, product and/or project documentation, and management of content-rich Web sites. It consists of a repository server with powerful querying and versioning capabilities, and a Wiki-like front-end Web user interface with in-browser rich-text authoring.
Compass is a Java framework which makes it simple to map your Java object model into a search engine. It is built on top of the Lucene search engine. Compass features declarative mapping technology OSEM (similar to O/R database mapping), transaction management, Google-like query syntax, externalization of common metadata, and much much more.