Alternativas ao CircleBack para Java Mobile com licença de código aberto

• Java Mobile
  Todas as plataformas 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
• Licença Open Source
  Qualquer licença Licença gratuita Licença Open Source Licença comercial