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Communication3 alternatives·~$9/mo to replace

3 Best Slack Alternatives for Small Teams (2026)

Slack averages $9/user/month. Below are 3 hand-picked alternatives (3 of them free or open-source) with verified pricing and honest pros and cons. Ranked by potential savings.

Quick pick

If you’re short on time, the best free pick is Discord (Free) — Free team communication with voice, video, and text. No message history limits. Great for small teams.

For a deeper read, scroll the full list below. Each entry covers price, what type of alternative it is, and the official website.

All 3 alternatives, ranked by savings

  1. #1

    Discord

    FreeFree · saves 100% vs Slack

    Free team communication with voice, video, and text. No message history limits. Great for small teams.

    discord.com ↗
  2. #2

    Rocket.Chat

    Open sourceFree · saves 100% vs Slack

    Open-source Slack alternative. Self-host for free with channels, DMs, video calls, and integrations.

    rocket.chat ↗
  3. #3

    Element (Matrix)

    Open sourceFree · saves 100% vs Slack

    Decentralized, end-to-end encrypted messaging on the Matrix protocol. Self-hostable, federated.

    element.io ↗

How to actually pick one

Three-question filter:

  1. Can you self-host? If yes, the open-source picks usually win on cost and data ownership.
  2. Will the alternative cover ≥80% of your current use case? Don’t switch for a 50% feature match — the hidden cost of workflow re-learning outweighs the savings.
  3. What does the renewal math say? Calculate 12 months of cost on the alternative vs. Slack, then subtract switching cost (estimated at ~1 work week).

See also