Alternativy Groove pro všechny platformy s licencí open source

• Všechny platformy
  Všechny platformy Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) PHP Windows Mobile Slack Chrome MySQL Community Edition Google Apps Trello PostCenter
• Licence Open Source
  Jakákoli licence Bezplatná licence Licence Open Source Komerční licence