New York Software Industry Association
The New York Software Industry Association (NYSIA) is the leading trade association for software, information technology, and Web development companies in the New York City area. NYSIA's mission is to support the growth of the software development industry in this area.
http://www.nysia.org

Irish Software Association (ISA)
The Irish Software Association (ISA), is the principal trade association for the software industry in Ireland. As a trade sector within IBEC and a sub- sector of ICT Ireland, we shape policy in the software industry and represent its interests at domestic, EU and international levels. Our members range from small indigenous to large multinational organisations. Our core mission is to promote the common interests of the software sector as a whole as well as serving as a key resource to member companies.
http://www.software.ie/

Software Information Industry Association
The SIIA is an association for software companies whose mission is to protect, promote, and inform the industry.
http://www.siia.net/

International Biometrics Industry Association
Trade association representing developers, manufacturers, and integrators of biometric hardware and software.
http://www.ibia.org/

International Biometrics Industry Association
Trade association representing developers, manufacturers, and integrators of biometric hardware and software.
http://www.ibia.org

AsTEX
Association for the distribution of scientific software related to TeX. Information about the association, distributions, documentation and meetings. Site in English and French.
http://www.univ-orleans.fr/EXT/ASTEX/

Association Electronique Libre
The AEL is a Belgian-based association whose main goal is finding and supporting non-proprietary software. Has mailing list to join.
http://www.ael.be/

Concrete Pipe Association of Australia
Trade association. Includes newsletters, technical information, free software, training, membership roster, and industry links.
http://www.concpipe.asn.au/

International Association of IT Asset Managers
Seeking to promulgate an understanding of IT asset management best practices, International Association of Information Technologies (IAITAM) serves IT Asset Management professionals worldwide.
http://www.iaitam.org

International Association for Environmental Hydrology
A worldwide association for hydrology and the environment, the International Association for Environmental Hydrology is dedicated to cleanup of fresh water resources. IAEH publishes the Journal of Environmental Hydrology, Hydrology News, and the HydroKit series of hydrology software modeling packages.
http://www.hydroweb.com/