Alternative apps to Slack:
  • 4.3
    334 votes
    Skype is free and simple software that will enable you to make free calls anywhere in the world in minutes.
    • Freeware
    • Windows/macOS/Linux
  • 3
    13 votes
    Supercharge team collaboration with group chat and IM.
    • Freeware
    • Windows/macOS/Linux/Android
  • Not rated yet
    0 votes
    Bring your teams together in a place that makes it easy to keep people and work connected. 
    • Freeware
    • Windows/macOS/Android/iOS
  • 4.3
    11 votes
    Like WhatsApp Web, the desktop app is an extension of your phone: the app mirrors conversations and messages from your mobile device.
    • Freeware
    • Windows/macOS
  • Not rated yet
    0 votes
    From group messages and video calls all the way to helpdesk killer features our goal is to become the number one cross-platform open source chat solution.
    • Freeware
    • Windows
  • Not rated yet
    0 votes
    Fleep enables communication within and across organizations - be it your team chats, project communication or 1:1 conversations.
    • Freeware
    • Windows
  • Not rated yet
    0 votes
    A complete suite of social collaboration, communication, sales and management tools for organizations.
    • Freeware
    • Windows
  • Not rated yet
    0 votes
    Say goodbye to relying on email and meetings.
    • Freeware
    • Windows/macOS/Android/iOS
  • Not rated yet
    0 votes
    Franz is a free messaging app that combines chat & messaging services into one application. Franz currently supports Slack, WhatsApp, WeChat, HipChat, Facebook Messenger, Telegram, Hangouts, GroupMe, Skype, and more.
    • Freeware
    • Windows/macOS/Linux
  • Not rated yet
    0 votes
    Secure video calls, conferencing, chat, desktop sharing, file transfer, support for your favorite OS, and IM network
    • Freeware
    • Windows