Alternatívy programu CircleBack pre Sailfish OS s licenciou s otvoreným zdrojom

• Sailfish OS
  Všetky platformy Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Blackberry 10 iPad Android Tablet Windows S PlayBook Web Self-Hosted Software as a Service (SaaS) Windows Mobile Java Mobile Microsoft Office Outlook iOS S60 Chrome Gmail Firefox OS Sailfish OS Salesforce.com HubSpot Intercom Marketo Pardot Eloqua Google Contacts
• Licencia Open Source
  Akákoľvek licencia Bezplatná licencia Licencia Open Source Obchodná licencia