Alternatives à Pollscape pour Self-Hosted avec licence open source

• Self-Hosted
  Toutes les plateformes Windows Mac Linux Chrome OS Android iPhone Windows Phone Android Wear iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) PHP Windows Mobile Java Mobile Wordpress Slack S60 Facebook Messenger Chrome Web Store MailChimp Trello Salesforce.com HubSpot Google Drive - Sheets Intercom Autopilot
• Licence Open Source
  Toute licence License gratuite Licence Open Source Licence commerciale