Alternativer til PMRobot til Ruby on Rails med open source-licens

• Ruby on Rails
  Alle platforme Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Apple Watch iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) BSD Chrome Ruby MySQL Community Edition Cloudron MariaDB Ruby on Rails Microsoft SQL Server PostgreSQL
• Open Source-licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens