Free alternatives to Slack

Slack is free with limits, and paid beyond that. Here are 2 tools that do the same job for free, including open-source software.

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  Element · element.io

  Encrypted, decentralized team messaging built on the Matrix protocol.

  FreeOpen sourceMobile app
  Open ↗
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  Discord · discord.com

  Community servers with text and voice channels.

  FreeMobile app
  Open ↗