ClassMates  
   Lists US and Canadian schools, both domestic and international. Free registration to see who is listed. Subscription fees to send personal messages and use other features. Claims over 37 million members.
   http://www.classmates.com/

Gradfinder  
   Lists all types of schools (primary, secondary, colleges, etc.). across the world. Free registration. Claims over 2 million members.
   http://www.gradfinder.com/

SchoolNews.com  
   Lists US and Canadian high schools and colleges. Free registration to view basic listings and post to message boards. One-time listing fee to send personal messages and use advanced features.
   http://www.schoolnews.com/

Reunion.com  
   Lists US and Canadian high schools. People search available as well. Free registration to see who is listed. An annual fee is required to send personal email and use other features. Claims over 22 million members.
   http://www.reunion.com/

Reunion Announcements  
   Lists US and Canadian class reunions. No registration required. Free posting.
   http://www.reunionannouncements.com

Find old friends in Australia & New Zealand  
   Lists all type of organizations around Australia and New Zealand. Free registration to view most information. Yearly fee to send and post messages and use other features. Claims over 1 million members.
   http://www.schoolfriends.com.au

Club Ghana  
   Lists schools from Ghana. Free registration. Claims over 12,000 members.
   http://www.clubgh.com

Yoshioris Alumni Network  
   School alumni and class reunions in over 120,000 schools nation wide.
   http://us.yoshioris.com

Graduates.com  
   Lists over 180,000 schools, colleges and universities from over 200 countries. Free registration and browsing.
   http://graduates.com

AussieSchoolmates  
   Lists schools across Australia. Free to use. Claims to have over 29,000 members.
   http://www.aussieschoolmates.com.au

Berlin Alumni Network - BAN  
   Consortium of the Berlin universities Humboldt-Universitaet, Freie Universitaet and Technische Universitaet (Germany) for Alumni from developing counties. Free registration.
   http://www.ban-project.de

Canadian Alumni Norway  
   For Canadian university graduates living in Norway and Canada. Free registration. Fees for event participation.
   http://www.freewebs.com/canalumnorway/

Schoolbuddies.com  
   Lists US and Canadian schools. Free registration.
   http://schoolbuddies.com/index.html

The Alumni Highway  
   Links to school reunion and alumni pages.
   http://www.alumnihighway.com/

Alumni Society  
   Lists 351 schools. Free registration.
   http://www.alumnisociety.com

AlumiExplorer.com  
   Lists US high schools. Completely free.
   http://www.alumniexplorer.com/ae/default.asp

AlumniClub.org  
   Lists alumni club Web sites for Univ. of California, Berkeley and Univ. of Illinois.
   http://www.AlumniClub.org/

Alumni Find  
   List schools across the world. Completely free.
   http://www.alumni-find.com/main/

Alumni Archive  
   Hosts reunion sites for some schools in Florida, Maryland, Virginia, and Washington. Free registration.
   http://www.alumniarchive.net/

Alumni Crawler  
   Find high school classmates in this completely free directory.
   http://alumnicrawler.com

Austrailians Reunited  
   Australian made and owned reunion site.
   http://www.australiansreunited.com.au/

Classdays.com  
   Lists US schools. Free registration. Fees for use of advanced features including messaging. Claims over 6 millions members.
   http://www.classdays.com/

GradFinder  
   Lists high schools and colleges around the world. Claims over 2 million members.
   http://www.gradfinder.com/p/grad/main.cgi?start=1

Australian Lost School Friends  
   Austrailia's first and only totoally free to use old school pupil directory.
   http://www.lostschoolfriends.com.au/index.asp

Oldfriends.co.nz  
   The best way to find old schoolmates, workmates and people you know in New Zealand. Claims 388,540 members.
   http://www.oldfriends.co.nz/

Our Class Online  
   Provides tools that quickly empower you and your classmates to create your own reunion on the internet.
   http://www.ourclassonline.com/

Alumni.NET  
   Lists schools across the world. Claims over 3 million members.
   http://alumni.net

The Names Database  
   Lists US and Canadian alumni within The Names Database. No registration required. This is a static snapshot and is updated periodically.
   http://static.namesdatabase.com/