Alternatif untuk imarvel untuk Slack dengan lesen percuma

• Slack
  Semua platform Windows Mac Linux Chrome OS Android iPhone Windows Phone iPad Android Tablet Kindle Fire Windows S Web Self-Hosted Firefox Opera Safari Internet Explorer Vivaldi Browser Chromecast BSD Windows Mobile Wordpress Slack Electron / Atom Shell Chrome Microsoft Edge Gmail Twitter Yandex.Browser Google Drive Dropbox Brave Google Apps Trello Instagram GitHub Pages ASP.NET MVC Microsoft OneDrive DuckDuckGo
• Lesen percuma
  Mana-mana lesen Lesen percuma Lesen Open Source Lesen komersil