Douglas C. Schmidt - Personal site of Douglas C. Schmidt. Research information available includes Adaptive Communication Environment (ACE), TAO, CORBA, C++, and patterns.
ERights.org - Home of E, the secure distributed object platform and scripting language for writing Capability-Based Smart Contracts.
Law of Demeter - Information on this object oriented style rule which aims to limit the number of objects each object interacts with.
The Object Agency - General reference sources, database issues, organizations and conferences, programming languages, software reusability, general software engineering, booksellers and publishers.
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.
OOPSLA - Home of ACM's annual object-oriented technical conference, with information on upcoming sessions and past conferences.
- An index of object oriented resources.