Alternativ till Atlas för Ruby on Rails med gratis licens

• Ruby on Rails
  Alla plattformar Windows Mac Linux Android iPhone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) Ruby MySQL Community Edition Cloudron MariaDB Ruby on Rails Microsoft SQL Server PostgreSQL
• Gratis licens
  Eventuell licens Gratis licens Open Source-licens Kommersiell licens