Alternativ till LekkerIM för Slack med kommersiell licens

• Slack
  Alla plattformar Windows Mac Linux Chrome OS Android iPhone Windows Phone Blackberry Apple Watch Android Wear iPad Android Tablet Windows S Web Self-Hosted Software as a Service (SaaS) PHP JavaScript Python BSD Wordpress PortableApps.com Slack Electron / Atom Shell Discord Cloudron ZeroNet Go (Programming Language)
• Kommersiell licens
  Eventuell licens Gratis licens Open Source-licens Kommersiell licens