Modernizr Original author(s) Faruk Ateş Developer(s) Faruk Ateş, Paul Irish, Alex Sexton, Ryan Seddon, Patrick Kettner, Stu Cox, Richard Herrera, and contributors Initial release July 1, 2009 (2009-07-01)[1] Stable release 3.5.0 / April 13, 2017 (2017-04-13)[2] Repository github.com/Modernizr/Modernizr Written in JavaScript Type JavaScript library License MIT; it was dual-licensed MIT-BSD from June 14, 2010[3] to September 15, 2012[4] Website modernizr.com