4 alternatives comparedLast verified 2026-04-21 Live pricing
Looking for an alternative to Mattermost?
Whether you need better pricing, different features, or a tool that fits your workflow,
we've compared 4 verified team chat alternatives below.
Every price is checked daily against vendor pages — no stale data, no guesswork.
Prices in USD, verified from the United States. Regional pricing may vary.
Slack is the category leader for team chat and the tool most product-led companies default to. Pro at $8.75/user/mo annual is the real entry — Free tier's 90-day message history limit makes it unsuitable for any team that relies on chat archives. Third-party app ecosystem (2,600+ apps) is the strongest differentiator vs Teams.
UX is genuinely better than Teams — search, threads, formatting all more refined
2,600+ app integrations — largest ecosystem in team chat
Workflow Builder automates internal processes without code — unique at this price
Microsoft Teams Essentials at $4/user/mo annual is the cheapest serious team chat option by a wide margin — Slack Pro ($8.75) is 2.2x the price for similar core capability. If you don't need Slack's third-party app ecosystem, Teams delivers 90% of the value at half the cost. For organizations already on Microsoft 365, Teams is included — no separate bill.
$4/user/mo annual is the cheapest serious team chat option — half of Slack Pro
Free tier up to 100 users (60-min meeting cap) is legitimately usable for tiny teams
Included in Microsoft 365 Business plans — no separate bill if you're already on Microsoft ecosystem
Rocket.Chat is the self-hostable Slack alternative for teams with data sovereignty requirements. Starter at free-forever for up to 50 users includes full enterprise features (SSO, E2E encryption, RBAC, 64 languages). For compliance-regulated industries, governments, or privacy-maximalist organizations, Rocket.Chat self-hosted is a legitimate Slack replacement at near-zero cost.
Self-hostable for free up to 50 users — includes enterprise SSO, E2E encryption, RBAC
Data sovereignty guarantee when self-hosted — your server, your data, legally defensible
64 languages supported — better global team support than Slack (30+) or Teams (40+)
Discord is free team chat that some dev teams adopt — but you should probably not. The product is genuinely good and free forever for core functionality, but lacks enterprise features (SSO, compliance, admin controls, data retention policies) that any real business needs. Discord makes sense for public communities, gaming, or pre-revenue hobby projects. It's a liability for anything compliance-adjacent.