Marc Canter is CEO of Broadband Mechanics, which produces People Aggregator, a social networking tool with source available (but not under an open source license). Previously, he was a founder of the company that became Macromedia. His blog, Marc's Voice, frequently critiques other Internet luminaries and competitors, such as Mark Zuckerberg. Known for his boisterous appearances at technology conferences, Canter makes no secret of his left-leaning politics, identifying himself as a "red diaper baby" at the 2005 Gnomedex meeting in Seattle.

Canter is also a contributor to many open standards efforts and advocates for end-user controlled digital identities and content - being a co-founder of the "Identity Gang", and a co-signer of the Social Web Users' Bill of Rights. He has consulted with global corporations including PCCW and Intel and has written on the multimedia industry, micro-content publishing and social networking.

Currently, Canter is developing software in the Greater Cleveland area and teaching classes at Case Western Reserve University.