Alternativen zu Codecall für Software as a Service (SaaS) mit Open Source-Lizenz

• Software as a Service (SaaS)
  Alle Plattformen Windows Mac Linux Chrome OS Android iPhone Windows Phone iPad Android Tablet Web Self-Hosted Software as a Service (SaaS)
• Open Source Lizenz
  Beliebige Lizen Freie Lizenz Open Source Lizenz Kommerzielle Lizenz