Alternativ till UICloud för GTK+ med gratis licens

• GTK+
  Alla plattformar Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry 10 iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) JavaScript jQuery BSD Chrome Sketch AngularJS JSON Microsoft Visual Studio Bootstrap Sass Intercom GTK+ jQuery UI Marvel
• Gratis licens
  Eventuell licens Gratis licens Open Source-licens Kommersiell licens