Alternativy k Collabtive pro Ruby on Rails s bezplatnou licencí

• Ruby on Rails
  Všechny platformy Windows Mac Linux Chrome OS Android iPhone Apple Watch iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) PHP Chrome Ruby Thunderbird MySQL Community Edition Cloudron MariaDB Ruby on Rails Microsoft SQL Server PostgreSQL
• Bezplatná licence
  Jakákoli licence Bezplatná licence Licence Open Source Komerční licence