Alternativy k Flairbuilder pro Slack s licencí open source

• Slack
  Všechny platformy Windows Mac Linux Chrome OS Android iPhone Apple Watch iPad Android Tablet Web Self-Hosted Software as a Service (SaaS) Firefox PortableApps.com Slack Electron / Atom Shell Apple Messages Apple TV Sketch Microsoft Office Word Google Drive Google Drive - Docs Google Apps Trello Microsoft Office Suite Google Drive - Sheets Atlassian Stash Google App Engine
• Licence Open Source
  Jakákoli licence Bezplatná licence Licence Open Source Komerční licence