Slack

Name: Slack
Brand: Slack
Price: 7.25 USD
Rating: 4.5 (61908 reviews)

Unclaimed Editor reviewed

Central hub for workplace communication and collaboration

Communication Productivity Workflow Automation Internal Comms

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4.5(61,908 across the web)

FreemiumVisit Website

Reviews onG2CapterraTrustpilotTrustRadiusPeerSpot

61908 reviews tracked

The Bottom Line

Best for

Startups, agencies, and companies not already paying for Microsoft 365 — especially teams that value messaging UX over bundled everything. For M365-standardized enterprises, Teams is the cheaper default even if users prefer Slack's day-to-day feel.

Entry price

Free plan available, paid tiers above

Biggest pro

Intuitive interface with low learning curve, most teams adopt it within days

Biggest con

Free plan limits message history to 90 days and allows only 10 app integrations

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: Startups, agencies, and companies not already paying for Microsoft 365 — especially teams that value messaging UX over bundled…

4.5/5 across review platforms

What Users Say About Slack

Slack's 2026 story is about AI integration. Users (42M daily actives) praise the AI features bundled into all paid plans since mid-2025 — thread summaries, meeting recap, search improvements. The persistent complaint: Microsoft Teams' free bundling with M365 is still winning on price, even as Slack now beats Teams on AI cost-per-user ($7.25 Pro vs $18+/mo for Teams + Copilot).

Highlights

Snappier messaging UX than Teams — still the best daily-driver feel
Slack AI bundled in all paid plans since mid-2025 — no $10/user/mo add-on
Slack Connect shares channels with external partners — essential for agencies and client work
Canvas (collaborative docs in channels) matured beyond Teams' Loop components
Semantic search (Pro+) actually finds what you meant, not just keyword matches

Limitations

Pro at $8.75/user/mo is pricey vs Teams bundled free with M365
Enterprise Grid pricing is custom and frequently $15-25+/user/mo
Huddles and video quality still trail Zoom and Google Meet
Some enterprise compliance controls lag behind Teams
File storage limits (5GB Free, 10GB Pro) are stingier than Teams + OneDrive

Best for: Startups, agencies, and companies not already paying for Microsoft 365 — especially teams that value messaging UX over bundled everything. For M365-standardized enterprises, Teams is the cheaper default even if users prefer Slack's day-to-day feel.

Editorial synthesis from industry coverage, product docs, and early user reports

Editorial policy

What is Slack?

Editorial review

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.

Available on: Web, Windows, macOS, Linux, iOS, Android

LCLouis CorneloupUpdated May 26, 2026 · how we evaluateSourceslack.com ↗

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 Trial

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

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+

null

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

Calculate your cost View full pricing

How Slack's pricing compares

At $8.75/mo, Slack is mid-range of its 6 direct competitors ($0.67 to $14/mo across the set).

$0.67

Slack

$8.75

Mattermost

$10

Google Meet

$14

Entry paid plan, monthly.

Reviews

4.5/5

Across 61,908 verified user reviews on G2, Capterra, TrustRadius

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Best Slack Alternatives

Top alternatives based on features, pricing, and user needs.

View full list →

Microsoft TeamsFreemium

Unite chat, meetings, and files with Microsoft 365

4.4

Google MeetFreemium

Seamless video meetings for Google Workspace users

4.5

ZoomFreemium

Connect, communicate, and collaborate with HD video meetings

4.5

Google ChatPaid

AI-powered chat for teams of all sizes to connect, collaborate, and get more done.

4.5

DiscordFreemium

Your place to talk and hang out

4.4

MattermostFreemium

Open-source team collaboration platform

4.3

Rocket.ChatFreemium

Open-source team communication platform

4.2

ChantyFreemium

Team chat app with built-in task management

4.6

See all Communication tools →

Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

All Slack alternatives8+ tools ranked, pricing + verdict per pick Slack vs Microsoft TeamsHead-to-head: features, pricing, who wins Slack vs Google MeetHead-to-head: features, pricing, who wins Slack vs ZoomHead-to-head: features, pricing, who wins

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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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