Alternativa brogressu za Ruby s komercijalnom licencom

• Ruby
  Sve platforme Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Blackberry 10 Apple Watch Android Wear Pebble iPad Android Tablet Kindle Fire Web Self-Hosted Software as a Service (SaaS) Firefox Safari PHP Chrome Ruby Gmail GNU Emacs Cloudron Sandstorm.io
• Komercijalna licenca
  Bilo koja licenca Besplatna licenca Licenca otvorenog koda Komercijalna licenca