Alternatívy programu Signal pre Software as a Service (SaaS) s licenciou s otvoreným zdrojom

• Software as a Service (SaaS)
  Všetky platformy 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 MailWizz EMA Amazon SES (Simple Email Service)
• Licencia Open Source
  Akákoľvek licencia Bezplatná licencia Licencia Open Source Obchodná licencia