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Best Slack alternatives (2026)
Slack's Pro plan is $8.75/user/mo and Business+ is $15. The Free tier now caps message history at 90 days. For small teams that single change pushed many to look elsewhere.
Below: five Slack alternatives that genuinely work in 2026, with honest notes on community-vs-workplace fit and self-hosting trade-offs.
No paid rankingsPricing checked June 15, 20266 options
Pricing comparison
| Tool | Price | Notes |
|---|---|---|
| Slack Pro | $8.75/user/mo | Unlimited history, integrations, group huddles. |
| Discord | $0 (Nitro $9.99/mo) | Free for unlimited messages and voice. Less workplace-shaped. |
| Mattermost Professional | $10/user/mo (cloud) | Self-host free. Strong for engineering teams. |
| Rocket.Chat | $4/user/mo (cloud) | Self-host free. LiveChat for customer support included. |
| Zulip Standard | $8/user/mo | Threaded by topic — best signal-to-noise of any chat tool. |
| Microsoft Teams Essentials | $4/user/mo | Bundled cheaply if you already have Microsoft 365. |
Who should switch
- ✓Communities (open source, gaming, creator) — Discord is the obvious move.
- ✓Engineering-heavy teams that want self-hosted chat with full data control.
- ✓Teams drowning in #general noise — Zulip's topic threading is genuinely transformative.
- ✓Small businesses already paying for Microsoft 365.
Who should not switch
- ·Companies whose entire workflow depends on Slack apps (Linear, Notion, GitHub Slack integrations).
- ·Sales orgs with Salesforce + Slack channels for every deal.
- ·Teams whose customers are already in shared Slack channels with them.
Savings math
- Slack Pro for a 25-person team: $218.75/mo = $2,625/yr.
- Mattermost self-hosted: ~$10/mo VPS = $120/yr. Saving: $2,505/yr (95%).
- Microsoft Teams Essentials for 25: $100/mo = $1,200/yr (if you already have 365, near $0 marginal).
- Discord for a community: $0.
Caveats
- !Discord isn't shaped for work — no good thread tools, no SOC2 compliance on free.
- !Self-hosted chat means uptime and backups are on you.
- !Migrating message history is rarely complete — Slack's export tools are limited.
Final verdict
For communities: Discord. For engineering teams: Mattermost self-hosted. For Microsoft shops: Teams Essentials. For threaded-conversation lovers: Zulip.
Pricing checked June 15, 2026. We re-verify every comparison page on a rolling basis.
Sources
Related guides
Prices change often — verify on the vendor's site before switching.