Alternatif untuk Response Wise untuk Software as a Service (SaaS) dengan lesen sumber terbuka

• Software as a Service (SaaS)
  Semua platform Windows Mac Linux Android iPhone Apple Watch iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) Python BSD Windows Mobile Solaris Amazon SES (Simple Email Service)
• Lesen Open Source
  Mana-mana lesen Lesen percuma Lesen Open Source Lesen komersil