Object-Oriented

Douglas C. Schmidt
Personal site of Douglas C. Schmidt. Research information available includes Adaptive Communication Environment (ACE), TAO, CORBA, C++, and patterns.
http://www.cs.wustl.edu/~schmidt/

ERights.org
Home of E, the secure distributed object platform and scripting language for writing Capability-Based Smart Contracts.
http://www.erights.org/

Jeff Sutherland's Object Technology Site
Breaking news on object technology, components, business objects, and distributed computing on the Web.
http://jeffsutherland.com

Law of Demeter
Information on this object oriented style rule which aims to limit the number of objects each object interacts with.
http://www.ccs.neu.edu/home/lieber/LoD.html

The Object Agency
General reference sources, database issues, organizations and conferences, programming languages, software reusability, general software engineering, booksellers and publishers.
http://www.toa.com/

Object-oriented Resources: AmbySoft Home Page
Links, white papers, book ordering and other information for object-oriented developers.
http://www.ambysoft.com/

OOPS Research Group
An academic group based apparently at U. Texas. Looks like this site has enough useful links, papers and freebies to kill a couple of hours, at least.
http://www.cs.utexas.edu/users/oops