Internet Toolkit v3.5 released Thursday, 20. February 2014 Free upgrade from ITK v3.x e-node just released the 4D Plugin “Internet Tool Kit – ITK” v3.5 as a free upgrade for all ITK v3.x owners. v3.5 works on a Mac with “Mavericks” (OSX 10.9) – older versions don’t. ITK download link