Peter says about the release of Avanti-0.2 [1]: "Version 0.2 includes a new package that implements the abstract relationship modeling system (ARMS), a core component of Avanti. An ARMS is an information system that can be used to map and manipulate
relationships between a set of objects of various types (for example, a set of URL's, websites, text files, records in disparate databases, etc.).
Links:
[1] http://www.nslsilus.org/~schlumpf/avanti