GMPG was founded by Tantek Çelik, Eric Meyer, and Matthew Mullenweg who developed the initial principles for XFN, the XHTML Friends Network as an attempt for the creation of a simple way to express human relationships on the Web within HTML (machine-readable).
The Global Multimedia Protocols Group (GMPG) was founded in March 2003 by Tantek Çelik, Eric A. Meyer, and Matt Mullenweg.