TL;DR - Slack
- Channel-based messaging platform with 2,600+ integrations, huddles, Canvas docs, and workflow automation
- Free plan covers basics (90-day history, 10 apps); paid plans start at $7.25/user/month with unlimited history
- Best for distributed teams needing deep app integrations — less ideal if you need built-in project management
Pricing: Free plan available
Best for: Growing teams
4.5/5 across review platforms
Pros & Cons
Pros
- Intuitive interface with low learning curve — most teams adopt it within days
- Deepest third-party integration ecosystem of any team chat tool (2,600+ apps)
- Slack Connect eliminates email chains with external partners via shared channels
- Powerful search across all messages, files, and connected apps from one bar
- Workflow Builder lets non-technical users automate routine processes
- Strong enterprise security with SOC 2/3, ISO 27001, HIPAA, and FINRA compliance
Cons
- Free plan limits message history to 90 days and allows only 10 app integrations
- Notification overload in large workspaces — channels can become noisy without discipline
- Pricing adds up quickly for large teams at $7.25-$12.50/user/month
- No built-in project management — still requires separate tools like Asana or Jira
- Slack AI features require Business+ or Enterprise plans, not available on Pro
Ratings Across the Web
4.5(61,908 reviews)
G236,900 reviews
4.5/5
Capterra24,000 reviews
4.7/5
Trustpilot287 reviews
2.4/5
TrustRadius638 reviews
4.5/5
PeerSpot83 reviews
4.2/5
Ratings aggregated from independent review platforms. Learn more
Preview
Key Features
Channels for organizing conversations by team, project, or topicHuddles with built-in audio/video calls and AI note-takingCanvas for creating rich, collaborative documents within SlackWorkflow Builder for no-code automation of approvals, requests, and tasksSlack Connect for secure messaging with external partners and clientsSlack AI with channel summaries, daily recaps, and search answersEnterprise search across messages, files, and 2,600+ connected appsClips for recording and sharing async audio and video updatesLists for tracking projects, tasks, and requests inside channelsEnterprise Key Management with custom encryption key controls
Pricing Plans
Free TrialFree
Free
For small teams getting started
- 90-day message and file history
- 10 app integrations
- 1:1 huddles
- Channels and DMs
- 5 GB total workspace storage
- Basic AI (conversation summaries, huddle notes)
- Slack Connect with 1 external org
Pro
$7.25/per user/month (annual)
For growing teams that need full history and more integrations
- Unlimited message history
- Unlimited app integrations
- Group huddles up to 50 participants
- Unlimited Slack Connect orgs
- 10 GB storage per user
- Google SSO
- Basic AI (summaries and huddle notes)
- Salesforce channels
- Session duration controls
Most Popular
Business+
$15/per user/month (annual)
For large teams needing compliance, advanced AI, and SSO
- Everything in Pro
- Advanced AI (search, recaps, translations, file summaries, workflow generation)
- SAML-based SSO
- Data exports and corporate compliance
- 20 GB storage per user
- 99.99% uptime SLA
- 24/7 support with 4-hour response
- HIPAA compliance support
- Advanced Salesforce integrations (deal swarming, forecasting)
Enterprise+
For complex organizations needing enterprise-grade control
- Everything in Business+
- Enterprise AI search across organizational data
- Unlimited workspaces
- Enterprise Key Management (EKM)
- 1 TB storage per user
- DLP, eDiscovery, and custom retention policies
- Multiple SAML configurations
- FINRA and FedRAMP compliance
- GovSlack available (FedRAMP High, IL4)
- Free Slack Connect for external partners on free plans
About Slack
By Toolradar Team·
Slack is a channel-based messaging platform built for workplace communication and collaboration. Acquired by Salesforce in 2021, it serves as a central hub where teams organize conversations by topic, project, or department in dedicated channels. Core capabilities include real-time messaging, audio/video huddles with AI-powered note-taking, Canvas documents, workflow automation via a no-code builder, and an enterprise search that spans connected third-party apps. Slack Connect enables secure communication with external partners and clients. The platform integrates with over 2,600 apps including Google Workspace, Salesforce CRM, Jira, and GitHub. Slack AI provides channel summaries, daily recaps, and thread catch-ups. Used by organizations from startups to Fortune 100 companies, the platform processes over 700 million messages daily, with 4 million Slack Connect users collaborating across organizations weekly.
How we evaluate tools →Source: slack.com
Reviews
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Explore More
Slack FAQ
How does Slack compare to Microsoft Teams?
Slack offers a deeper third-party integration ecosystem (2,600+ apps vs Teams ~700) and a more polished UX for channel-based communication. Teams bundles video conferencing and Office 365 at no extra cost for Microsoft 365 subscribers. Slack excels at cross-company collaboration via Slack Connect; Teams focuses on internal communication and meetings.
What are the limits of the free plan?
The free plan provides 90 days of message history, a maximum of 10 app integrations, 1:1 huddles only, and Slack Connect with one external organization. Upgrading to Pro removes all history and integration limits.
Is Slack secure for regulated industries?
Yes. Slack holds SOC 2 Type II, SOC 3, and ISO 27001 certifications. Business+ supports HIPAA compliance. Enterprise Grid adds Enterprise Key Management with customer-controlled encryption keys, FedRAMP authorization, and FINRA compliance support.
Can I communicate with people outside my company?
Yes, via Slack Connect. Create shared channels with external partners, clients, or vendors. Free supports one external connection; Pro and above allow unlimited external organizations.
What is Slack AI?
Slack AI provides channel summaries, daily recap digests, thread summaries, and AI-powered search answers from your workspace history. Available on Business+ and Enterprise Grid plans only.
Does Slack integrate with Salesforce?
Yes. Since Salesforce acquired Slack in 2021, you can view and update Salesforce records within channels, receive deal alerts, and use Agentforce AI agents for CRM lookups. Available on all paid plans.
Source: slack.com
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