IEEE Computer Society

Promotes research and serves as a provider of technical information and standards to computing professionals. Has news, articles, organization and publication information, and suborganization information.
http://www.computer.org/

Computing Research Association

Seeks to strengthen research and education in computing fields. Membership, event and job information.
http://www.cra.org/

Informatics Society of Iran

Committed to the advancement of computer knowledge and standards in Iran. Introduction, membership information and past reports.
http://gpg.com/MERC/org/isi/isi.html

Council of European Professional Informatics Societies

Promotes to European bodies the views of informatics professionals, encourages professional competence. Organization and professional standards information, position papers and online journal.
http://www.cepis.org/

International Federation for Information Processing

Seeks to foster collaborative research and to facilitate communication between those involved in Computer Science research, practice and use. Includes description, calendar, subgroup information and newsroom.
http://www.ifip.or.at/

USENIX: The Advanced Computing Systems Association

Supports IT professional development, and application-oriented research. Includes industry news, calendar and online magazine.
http://www.usenix.org/

International Society for Computers and Their Applications

Seeks to promote Computer Science and Engineering with a view towards applications. Includes information on the society and on membership, as well as conference and journal descriptions.
http://www.isca-hq.org/

Finnish Society for Computer Science

Founded in 1982 to advance computer science research, promote new applications based on research, and to increase the collaboration between computer scientists and practitioners. Contains organization information. [English/Finnish/Swedish]
http://www.funet.fi/org/tkts/index-eng.html

Computer Society of South Africa

Promotes high standards for IT professionals in South Africa, and the protection of privacy standards. Includes society, member, project and event information.
http://www.cssa.org.za/

Austrian Computer Society

Seeks the "comprehensive and interdisciplinary promotion of information processing." Has organization information, mailing list and conference information. [German/English]
http://www.ocg.at/english/index.html

Australian Computer Society

Promotes IT issues and professional development. Information about membership, publications, events, courses and exams and certification.
http://www.acs.org.au/

European Association for Theoretical Computer Science

Aims to facilitate the exchange of ideas and results among theoretical computer scientists and to stimulate cooperation between theorists and practitioners. Has organization, publication and activities information and news.
http://www.eatcs.org/

German Society for Online Research

Co-hosts the German Online Research Conferences (GOR) and supports the betterment of Online Research and Internet Science. Has organization, membership and conference information.
http://www.dgof.de/indexe.htm