Slack vs Microsoft Teams vs Google Chat: Best Team Communication Tool
Once your business has more than one person, email becomes a graveyard for decisions. Slack, Microsoft Teams, and Google Chat all replace email for internal communication — but they integrate with completely different ecosystems. The right pick depends almost entirely on what software you already use.
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The quick answer
Use Slack if your team uses a mix of SaaS tools and needs deep integrations. Use Microsoft Teams if your business runs on Microsoft 365 — the bundled value is hard to beat. Use Google Chat if you are already on Google Workspace — it is included at no extra cost and handles most small business needs well.
Side-by-side breakdown
Slack is the gold standard for integrations. It connects to over 2,600 apps, has a clean channel structure, and its search is excellent. The free plan limits history to 90 days. Paid starts at $7.25/user/month.
Microsoft Teams comes bundled with Microsoft 365 Business Basic ($6/user/month), which also includes Outlook, Word, Excel, SharePoint, and OneDrive. If you are already paying for Microsoft 365, Teams costs you nothing extra. Its interface is denser than Slack but its video call quality and recording features are stronger.
Google Chat is included with Google Workspace (starting at $6/user/month). It handles basic channels and direct messages well but has fewer integrations and a less polished experience than Slack. If your team lives in Gmail and Google Docs, the friction is minimal.
When to choose Slack
Choose Slack when your team uses tools like Notion, Linear, GitHub, Stripe, or HubSpot and you want those tools to surface notifications and actions directly in chat. Slack is also the best choice when you hire contractors across different companies, since it supports multi-workspace access cleanly.
When to choose Microsoft Teams
Teams is the obvious choice if you are already paying for Microsoft 365. You get video calls, file collaboration, and chat under one bill. It is also stronger than Slack for larger internal teams, formal org structures, and regulated industries that need meeting recordings and compliance controls.
When to choose Google Chat
If your team runs entirely on Google Workspace — Gmail, Docs, Sheets, Calendar — Google Chat is the path of least resistance. It is already paid for, requires zero migration, and keeps all communication in one ecosystem. For businesses under 10 people, it covers the essentials without adding another subscription.
The verdict
Google Workspace team: use Google Chat. Microsoft 365 team: use Teams. Mixed SaaS stack or integration-heavy team: use Slack. Do not pay for Slack if you are already paying for an ecosystem that includes a communication tool.
How to get started
Check what collaboration suite you already pay for before adding a new subscription. If you are starting fresh, Google Workspace gives you email, docs, and chat for $6/user/month — start there and add Slack later if integrations become a priority.
RECOMMENDED TOOLS
Slack
The standard for team communication with a massive app ecosystem
Google Workspace
Includes Google Chat, Gmail, Docs — best value for small teams
Microsoft Teams
Included with Microsoft 365 — deep Office integration
Loom
Async video messages — reduces meetings for distributed teams
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FREQUENTLY ASKED QUESTIONS
Can I use Slack for free?
Yes. Slack's free plan supports unlimited users and unlimited channels but limits message history to 90 days and allows only one active integration per app. For small teams just getting started, the free plan works well.
Is Microsoft Teams free?
There is a free version of Teams with limited features. The full version comes with Microsoft 365 Business Basic at $6/user/month, which includes the entire Office suite — making it very strong value.
Should I use both Slack and email?
Most teams keep email for external communication (clients, vendors, invoices) and use Slack or Teams for internal team communication. Running both for internal work creates confusion — pick one and stick to it.
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