Alternativer til Airborne Messenger til Slack med open source-licens

• Slack
  Alle platforme Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Apple Watch Android Wear iPad Android Tablet Kindle Fire Windows S Web Software as a Service (SaaS) Oculus Rift HTC Vive Xbox BSD Windows Mobile Java Mobile Xfce PortableApps.com Facebook Slack S60 Chrome HP webOS Unity Google Drive Zapier Google AdWords
• Open Source-licens
  Enhver licens Gratis licens Open Source-licens Kommerciel licens