Alternativa ColorProu za Sketch z brezplačno licenco

• Sketch
  Vse platforme Windows Mac Linux Android iPhone Android Tablet Web Self-Hosted Software as a Service (SaaS) Firefox BSD Xfce PortableApps.com Java Chrome Sketch .NET Framework
• Brezplačna licenca
  Vsako dovoljenje Brezplačna licenca Open Source licenca Trgovsko dovoljenje