Association of Computer Machinery was founded in 1947. ACM is a major force in advancing the skills of information technology professionals and students worldwide. Today, our 75,000 members and the public turn to ACM for the industry's leading Portal to Computing Literature, authoritative publications and pioneering conferences, providing leadership for the 21st century.

http://www.acm.org

IEEE Computer Society, with nearly 100,000 members, is the world's leading organization of computer professionals. Founded in 1946, it is the largest of the 36 societies of the Institute of Electrical and Electronics Engineers (IEEE).

http://www.computer.org

The IEEE (Eye-triple-E) is a non-profit, technical professional association of more than 377,000 individual members in 150 countries. The full name is the Institute of Electrical and Electronics Engineers, Inc., although the organization is most popularly known and referred to by the letters I-E-E-E.

http://www.ieee.org