Alternativy k PlanPlusOnline pro Software as a Service (SaaS) s licencí open source

• Software as a Service (SaaS)
  Všechny platformy Windows Mac Linux Android iPhone iPad Web Self-Hosted Software as a Service (SaaS) Windows Mobile Microsoft Office Outlook Chrome Microsoft Office Suite
• Licence Open Source
  Jakákoli licence Bezplatná licence Licence Open Source Komerční licence