Just a bit of a look at ea tools. Need to spend some time reviewing these.
Information Architecture Institute: http://www.iainstitute.org/
Mike: http://mike2.openmethodology.org/ is an open source methodology for enterprise information management.
Essential Project: http://www.enterprise-architecture.org/
Protege. http://protege.stanford.edu/ a free, open source ontology editor and knowledge-base framework.
abacus Avolution: http://www.avolution.com.au/