Rhizome is a Document Database or Repository. It is used for storing arbitrarily structured documents and the associated metadata. It provides several pattern-based helper libraries (like a chain of command pattern for interfacing). It also provides robust integration with the Lucene search engine. It does not require a relational database backend.

Sinciput is a note-taking application developed to facilitate careful and scholarly research. It is bibliographically oriented -- that is, it is designed to keep track of sources and citations. Sinciput facilitates careful reading of a text (book, journal, paper) as well as simplifying note-taking during conferences and lectures.