Implementation status Protocol, version Draft date Internet Explorer Firefox[22] (PC) Firefox (Android) Chrome (PC, Mobile) Safari (Mac, iOS) Opera (PC, Mobile) Android Browser hixie-75 February 4, 2010 4 5.0.0 hixie-76 hybi-00 May 6, 2010 May 23, 2010 4.0 (disabled) 6 5.0.1 11.00 (disabled) hybi-07, v7 April 22, 2011 6[23][lower-alpha 1] hybi-10, v8 July 11, 2011 7[25][lower-alpha 1] 7 14[26] RFC 6455, v13 December, 2011 10[27] 11 11 16[28] 6 12.10[29] 4.4