Object Primer
The Application Developer's Guide to Object-Orientation. An introduction to object-oriented analysis and design techniques. By Scott W. Ambler, SIGS Books.
http://www.ambysoft.com/theObjectPrimer.html

Object Orientation Tips
The most useful and interesting OO posts collected from newsgroups, mailing lists and web forums.
http://ootips.org/

Sajeev, A. S. M.
University of New England - Object-oriented software engineering; object-orientation, concurrency and visual programming; distributed systems and software engineering.
http://mcs.une.edu.au/~sajeev/

Temple Orientation and Heliacal Stars
Orientation of Greek and Egyptian temples and the role of astronomy in the setting of temple orientation.
http://www.geocities.com/aleph135/temple15.html

Object-Orientation FAQ
The Comp.Object FAQ, or Object FAQ, is the most comprehensive resource on object technology anywhere. It contains information on class, object, metaclass, inheritance, dynamic inheritance, multiple inheritance, polymorphism, multiple polymorphism, software engineering, object technology, CASE, Environments, C++, Smalltalk, CLOS, Java, Java Beans, Java Environments, Bjarne Stroustrup, Grady Booch, Bertrand Meyer, Microsoft, Apple, Next, and more. Brought to you by Bob Hathaway, Robert John Hathaway III. It's a free document or journal, and is provided as a community service
http://www.objectfaq.com/oofaq2/

Why is Garbage Collection a Good Thing?
Definition and answer with references, from Object-Orientation FAQ.
http://www.ipipan.gda.pl/~marek/objects/faq/oo-faq-S-3.12.html

Visula
A general-purpose visual programming language (VPL) based on object-orientation.
http://visula.org/

Applied Paleomagnetics, Inc.
Paleomagnetic core orientation and paleomagnetic services including paleomagnetic fracture orientation, fracture studies in fractured reservoirs, paleomagnetic orientation of in-situ stress and more.
http://www.appliedpaleomagnetics.com/

Iguana Project
Investigating use of object-orientation, computational reflection, and metaobject protocols (MOPs) to support dynamic customizing of (system) software.
http://www.dsg.cs.tcd.ie/~coyote/

Trion Development Portal
Goal: create modern 32/64-bit OS, based on ideas of object-orientation, nanokernel; coded in C++, C and Assembly where needed. Open source, BSD.
http://trion.sourceforge.net/