Alternativas ao Stormpath para Ruby com licença comercial

• Ruby
  Todas as plataformas Windows Mac Linux Chrome OS Android iPhone iPad Web Self-Hosted Software as a Service (SaaS) Firefox Safari Internet Explorer PHP Wordpress Chrome Ruby Joomla Magento Community Edition PrestaShop Drupal Zen Cart X-Cart Store Manager Vanilla vBulletin
• Licença comercial
  Qualquer licença Licença gratuita Licença Open Source Licença comercial