Best Free Slack Alternatives in 2026
Slack Pricing
Slack is a business communication platform offering workplace chat, tools, and services all within one platform.
3
Free Alternatives
1
Open Source
0
Self-Hostable
$?
Est. Yearly Cost
Why Consider Slack Alternatives?
Save money by switching to a free alternative to Slack
Get more features with open-source alternatives
Avoid vendor lock-in and own your data
Common Slack Pain Points
These are the top reasons users look for alternatives
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All Slack Alternatives (3)
Compare features, pricing, and migration difficulty
Discord
Why it's a good alternative: Free unlimited message history, excellent voice channels, popular with communities
BEST FOR
KEY FEATURES
Why it's a good alternative: Free tier is generous, includes meetings and chat, Office integration
BEST FOR
KEY FEATURES
Why it's a good alternative: Open-source Slack alternative, self-hostable, enterprise-grade
BEST FOR
KEY FEATURES
Slack vs Free Alternatives — Detailed Comparison
| Tool | Price | Open Source | Self-Hosted | Rating | Migrate |
|---|---|---|---|---|---|
| Slack | Paid | — | — | ||
| Discord | Free | — | |||
| Microsoft Teams | Free | — | |||
| Mattermost | Free | — |
How to Migrate from Slack — Step by Step
Frequently Asked Questions
Can I import Slack history to Discord?
Not natively, but third-party tools like Slack to Discord importer can help. Note: Discord has a different structure (servers vs workspaces).
Is Mattermost really free?
The core open-source version is free. Mattermost makes money on enterprise add-ons (AD/LDAP, compliance, etc.).