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Slack

Slack is the leading team messaging platform, used by over 10 million people daily for channel-based communication, file sharing, and workflow automation.
Verified: May 1, 2026 Pricing verified April 2026 from Slack official pricing page.
Starting at
Free plan available. Pro $7.25/user/mo, Business+ $12.50/user/mo (annual). AI features included in paid plans.
Free plan available indefinitely with limitations
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Software Specs

  • Free Trial: Free plan available indefinitely with limitations
  • Learning Curve: easy
What We Like
  • Channel-based model keeps conversations organized by project and topic
  • 2,400+ integrations including GitHub, Jira, Google Drive, and Zoom
  • Workflow Builder enables no-code automation for common tasks
  • AI channel summaries and search included in paid plans at no extra cost
Considerations
  • Free plan limits message history to 90 days and integrations to 10
  • Notifications can become overwhelming without discipline
  • Microsoft Teams is included free with Microsoft 365 subscriptions
  • Voice and video calls are basic compared to dedicated tools like Zoom
Expert Verdict
The best standalone team messaging tool available. For companies not tied to Microsoft 365, Slack is the default choice for organized, searchable internal communication.

Slack, owned by Salesforce since 2021, is the dominant workplace messaging platform for tech-forward companies. It organizes conversations into channels by topic, project, or team, replacing scattered email threads for internal communication.

The platform supports direct messaging, voice and video calls, file sharing, and a broad integration library covering tools like Google Drive, GitHub, Jira, and Zoom. Workflow Builder allows basic automation without code.

Slack’s strength is real-time collaboration at scale. Large organizations with hundreds of channels find it more manageable than alternatives like Microsoft Teams, which is tightly coupled to the Microsoft 365 ecosystem.

The free plan is limited to 90 days of message history and 10 integrations. Pro at $7.25/user/month unlocks unlimited history and integrations. AI features including channel summaries were bundled into paid plans in 2025 at no additional cost.

Slack is a strong fit for software teams and agencies already using tools like GitHub and Jira. Companies running on Microsoft 365 often find Teams sufficient since they are already paying for it.

Ready to get started with Slack?

Frequently Asked Questions

Is Slack free?

Yes. The free plan supports unlimited users but limits message history to 90 days and allows only 10 third-party integrations.

What does Slack Pro include over the free plan?

Pro unlocks unlimited message history, unlimited integrations, group voice and video calls, and canvas documents at $7.25/user/month billed annually.

Does Slack have AI features?

Yes. Channel recaps, thread summaries, and AI-powered search were bundled into paid plans in 2025 at no additional cost.

Is Slack better than Microsoft Teams?

Slack has better search, cleaner UX, and deeper third-party integrations. Teams is better if you are already on Microsoft 365 since it is included in most plans.

Can Slack replace email?

For internal communication, many teams replace most internal email with Slack. External communication with clients still typically uses email.

Advertiser Disclosure: Pricing verified April 2026 from Slack official pricing page.. We may receive compensation for clicks or purchases on this site.

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