ACM, the world’s largest educational and scientific computing society, delivers resources that advance computing as a science and a profession. ACM provides the computing field's premier Digital Library and serves its members and the computing profession with leading-edge publications, conferences, and career resources.
IEEE Computer Society (sometimes abbreviated Computer Society or CS) is a professional society of IEEE. Its purpose and scope is “to advance the theory, practice, and application of computer and information processing science and technology” and the “professional standing of its members.”
AITP is the leading worldwide society of professionals in information technology.