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

• Software as a Service (SaaS)
  Semua platform Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) Firefox Safari Internet Explorer PHP BSD Windows Mobile Wordpress Chrome Gmail MySQL Community Edition Drupal Google Apps Trello Microsoft SQL Server Salesforce.com Perl Zendesk Microsoft SQL Server Express
• Lesen Open Source
  Mana-mana lesen Lesen percuma Lesen Open Source Lesen komersil