Slack
Slack · Communication
Business messaging built around channels and workflows, acquired by Salesforce for $27.7B in 2021. Positioned as the alternative to email threads for team communication. Distinctive for its integrations depth (2,500+ apps) and the way it exposed how much internal knowledge lives in messages. Priced per ACTIVE user (not per seat) — inactive users don't bill, but active-member spikes surprise finance teams. Salesforce raised Business+ tier from $12.50 to $15/user in 2026 to fund AI features.
In other words, Slack is worth it for teams of 20+ that live in channels and need deep integrations with Salesforce, Google Workspace, or Zapier's 8,000+ apps. Pro covers most teams; Business+ unlocks SSO. Setup is instant, but channel discipline is a real skill. Best-in-class app directory (2,600+ integrations). Downside: gets expensive fast past 100 users, notification overload is the top pain point at scale, and Business+ went up ~20% in July 2026.
Pricing summary
$7.25/mo billed annually
Both
Main metered limit
Custom enterprise pricing available
No separate trial
Small team, budget-first? Google Chat (free with Workspace) or Discord (free). Need async-only? Twist by Doist.
All plans
| Plan | Monthly | Annual | Key limit |
|---|---|---|---|
Free | Free | Free | 90-day message history + 10 integrations |
ProEntry tier | $8.75 | $7.25Save 17% | unlimited history + unlimited apps |
Business+ | $18 | $15Save 17% | SSO + compliance + AI features |
Enterprise+ | Custom | Custom | multi-workspace + advanced admin |
All tier prices verified August 23, 2026 · View source →
Price history
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Frequently asked questions
About Slack pricing.
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At a glance
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