The Ultimate Oldgames Linkpage 
A large ring with many sites and a resources section.
http://www.tuol.org/Warez, Abandonware, and the Software Industry 
An article looking at the issues involved in abandonware from both sides.
http://www.brasslantern.org/community/companies/warez.html
Free Oldies 
Search engine covering many sites. Search by name or sort by genre.
http://www.freeoldies.com
The Abandonware Ring 
The original Abandonware Ring. With a FAQ and a resources section.
http://www.abandonwarering.com/
Dan's 20th Century Abandonware 
Application software from a time not quite forgotten.
http://www.dans20thcenturyabandonware.com/
Macintosh Garden 
Dedicated to preserving abandonware games for the Mac OS.
http://mac.the-underdogs.info/
Abandonwarez: The pros outweigh the cons 
Article on abandonware from The Adventure Collective.
http://www.adventureclassicgaming.com/index.php/site/features/160/
AbandonGames 
Offers a search engine for classic games and an active forum.
http://www.abandongames.com/