Best Slack Alternatives
Without Subscription
A team messaging and collaboration platform. But its subscription pricing makes many users look for one-time purchase or open-source alternatives.
Slack popularized team messaging but at $7.25/user/month ($87/year per person), it adds up quickly for teams. Signal is a free, open-source messaging app with end-to-end encryption that handles group chats well. For team communication, Mattermost is open-source and self-hostable with Slack-like features. Discord (free) is popular for community and team communication. The core messaging features — channels, direct messages, file sharing, and search — are available in every modern messaging platform. Slack's main advantage is its app ecosystem and integrations, which matter most for large organizations.
Why People Look for Slack Alternatives
Paying $8.75/month for Slack adds up to $105/year and $315 over three years. Many users search for alternatives because:
- -Team messaging
- -File sharing
- -Video calls
- -Integration hub
Quick Recommendation
Cost Comparison
Visit Slack websiteMonthly
$8.75
Yearly
$105
3-Year Cost
$315
Alternative
Free
Cost Over Time
Comparison Table
Free / Open Source
| Tool | Match | Pricing | Platform | Offline | OSS | Ownership | Migration | Vote |
|---|---|---|---|---|---|---|---|---|
Signal Best for privacy | 50% | Open Source | WindowsmacOSLinuxiOSAndroid | ✓ | ✓ | Full ownership | Hard |
Best for privacy
Key Features to Compare When Choosing a Slack Alternative
- 1Channels and direct messages
- 2File sharing
- 3Voice and video calls
- 4App integrations
- 5Search across messages
- 6Threads and conversations
- 7Custom emojis
- 8Workflow automation
Detailed Alternatives
Best for privacy
A free, open-source encrypted messaging app.
Editor's Note
Signal is excellent for secure messaging but lacks Slack's team collaboration features.
What you gain
- +End-to-end encrypted
- +Open source
- +Free
- +Non-profit
What you lose
- −Channels
- −Integrations
- −File sharing
- −Thread organization
Who Should Switch?
✓Good candidates for switching
✗Should keep using Slack
How to Switch from Slack: Step-by-Step Guide
- 1Export your Slack data — use Slack's export feature (workspace admin required)
- 2Try Mattermost for a Slack-like experience — self-hosted and open-source
- 3For small teams: Signal or Discord handle group messaging well
- 4Migrate your channels — recreate the most active channels in the new tool
- 5Update integrations — check which Slack bots and integrations you need
Slack's value is its integrations and ecosystem. For pure messaging, free alternatives are equally capable. The switch makes sense for teams that don't heavily depend on Slack-specific integrations.
Community Recommendations
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Frequently Asked Questions
Is Mattermost a good Slack alternative?
Yes. Mattermost offers channels, direct messages, file sharing, and integrations — similar to Slack. It's self-hosted, so you control your data. The free tier is generous for small teams.
Can Discord replace Slack for work?
For small teams and casual communication, yes. Discord has channels, voice chat, and screen sharing. It lacks Slack's business integrations and professional polish.
Is Signal good for team communication?
For small teams prioritizing privacy, yes. Signal has group chats, voice/video calls, and file sharing. It lacks channels and integrations, but for teams under 20 people it works well.
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Ready to stop paying for Slack?
Signal is completely free. No subscription, no recurring charges.