As of 22 December 2014, the World Wide Web Consortium (W3C) has 400 Members.
Read W3C Member testimonials, such as:
The Web3D Consortium, like W3C, supports open standardization. Web3D's open standards for real-time 3D communication include X3D, a powerful and extensible XML-based ISO standard for 3D visual effects, behavioral modeling, interaction and interoperability. Web3D membership includes companies, institutions, working groups and individuals. Contact Web3D Consortium
W3C Member since 1 April 1999.