A listing of object oriented software. If you don't see what you're looking for here, check the individual subject areas, especially for topics pertaining to particular technologies.
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/
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
Links to object oriented technology related to modeling methodologies, programming languages, distributed computing, patterns, frameworks, business object, operating systems, database and other advanced topics. (Junichi Suzuki) http://www.yy.cs.keio.ac.jp/~suzuki/jsuzuki.html
General reference sources, database issues, organizations and conferences, programming languages, software reusability, general software engineering, booksellers and publishers. http://www.toa.com/
