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Channel-based messaging platform for team communication and work
Slack is a channel-based messaging platform that organizes team communication around topics, projects, and teams rather than scattered inboxes. Conversations live in channels — public, private, or shared with outside organizations via Slack Connect — so context is searchable and newcomers can catch up. Threads keep discussions tidy, huddles offer lightweight audio/video, and clips let people share quick recordings, making Slack a hub for both real-time and asynchronous work.
Beyond chat, Slack is a work platform. Workflow Builder automates routine processes without code, canvases capture shared docs and knowledge alongside conversations, and lists track lightweight work. Its deep integration ecosystem connects thousands of apps — Google Workspace, Salesforce, Jira, GitHub, and more — so notifications and actions happen where teams already talk. Slack AI adds channel recaps, thread summaries, and AI search across the workspace, turning conversation history into answers.
Owned by Salesforce, Slack serves teams from startups to global enterprises, with enterprise-grade security, compliance, data controls, and the Enterprise Grid architecture for large, multi-workspace organizations. Pricing is per active user: a free plan with limited history, then Pro and Business+ tiers, with Enterprise Grid quoted for scale. It competes with Microsoft Teams, Google Chat, and Discord, differentiating on its integration ecosystem, search, and developer platform.
Pricing Model
Per active user, subscription
Starting Price
$7/mo
Free Options
Free version, Free trial
For small teams trying channel-based messaging.
Per user billed annually ($8.75 monthly). For small businesses.
Per user billed annually ($15 monthly). For growing companies.
For large organizations with many workspaces.
| Feature | Free | Pro Popular | Business+ | Enterprise Grid |
|---|---|---|---|---|
| 90 days message history | — | — | — | |
| 10 app integrations | — | — | — | |
| 1:1 huddles | — | — | — | |
| Basic search | — | — | — | |
| Channels | — | — | — | |
| Unlimited history | — | — | — | |
| Unlimited integrations | — | — | — | |
| Group huddles | — | — | — | |
| Workflow Builder | — | — | — | |
| Slack Connect | — | — | — | |
| Everything in Pro | — | — | — | |
| SAML SSO | — | — | — | |
| Compliance exports | — | — | — | |
| User provisioning (SCIM) | — | — | — | |
| 99.99% uptime SLA | — | — | — | |
| Multiple workspaces | — | — | — | |
| Advanced security and compliance | — | — | — | |
| HIPAA and FedRAMP options | — | — | — | |
| Enterprise key management | — | — | — | |
| Dedicated support | — | — | — |
Other
CRM
DevOps
Communication
Storage
Productivity
Authentication
Missing an integration?
API Types
SDK Availability
Verify SDK availability in vendor's documentation.
Developer Features
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Compliance Standards
SOC 2 Type II
EnterpriseISO 27001
EnterpriseGDPR Compliant
GlobalHIPAA
HealthcarePCI DSS
FinanceCCPA
PrivacyFedRAMP
GovernmentCSA STAR
CloudDeployment & Data
Data Residency Options
Verify with vendor for your specific region requirements.
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Async video messaging — record your screen and talk it through.
Quick comparisons
