 In response to users reverting to Winamp 2, Nullsoft continued the development of Winamp 2 to versions 2.9 and 2.91 in 2003, even alluding to it humorously.The beta versions 2.92 and 2.95 were released with the inclusion of some of the functionality of the upcoming Winamp 5.During this period the Wasabi cross-platform application framework and skinnable GUI toolkit was derived from parts of the Winamp3 source code.