Messaging Anti-Abuse Working Group (MAAWG)
- Association seeks to bring the messaging industry together to fight messaging abuse such as messaging spam, virus attacks, and denial-of-service attacks.
- http://www.maawg.org/

Mail Abuse Prevention System (MAPS)
- MAPS maintains the Realtime Blackhole List.
- http://www.mail-abuse.com/

Institute for Spam and Internet Public Policy
- Providing analysis, information, and consulting on industry issues relating to public policies and processes regarding spam, email, and the Internet.
- http://www.isipp.com/

Anti-Spam Research Group (ASRG)
- Investigates tools and techniques to mitigate the effects of spam.
- http://asrg.sp.am

Spam.Anti!
- Organization that fights SPAM and offers SPAM-fighting techniques. Both in French and in English since 1996.
- http://www.spamanti.net/

National Spam Mail Abuse Association
- Working to free inboxes of spam. Find news, tools, resources and contact information.
- http://www.natsma.com/

CAUBE.AU
- Fight Spam in Australia [CAUCE Partner]
- http://www.caube.org.au/

EuroCAUCE Homepage
- CAUCE partner in EU.
- http://www.euro.cauce.org/