Choosing Software

Knowing how to choose team chat software is a bigger decision than it looks: the tool you pick shapes how fast your team moves, how much context gets lost, and whether your stack stays lean or balloons into a compliance headache. This guide gives you the criteria, the right questions, and a decision framework so you can make a clean call.

What team chat software does

Team chat software replaces email threads and hallway conversations with persistent, searchable, channel-based messaging. Done right, it becomes the connective tissue between your other tools: tickets, pipelines, documents, and video calls all surface inside the same conversation thread. Done wrong, it becomes a firehose nobody reads.

Key Facts: Microsoft Teams reached approximately 380 million daily active users and holds around 54% enterprise market share in 2026 (SQ Magazine, 2026). Slack has over 615,000 companies and roughly 47 million daily active users globally (SQ Magazine, 2026). 73% of organizations now run two or more collaboration platforms simultaneously, which creates real integration and governance overhead (SQ Magazine, 2026).

What to look for

The table below covers the criteria that separate adequate tools from genuinely good ones. Use it as your scoring rubric when you demo vendors.

Criterion	Why it matters	What good looks like
Channel structure and search	Teams drown in noise without good channel hygiene; search becomes the memory layer	Threaded replies, topic-based channels, full-text search with filters, searchable file history
Integration depth	Chat is useless if it's a silo; you need alerts, actions, and approvals to flow in	Native integrations with your CRM, ticketing, CI/CD, or calendar. Webhooks and a public API for custom flows
Mobile experience	Field teams, sales reps, and managers live on phones	True feature parity on iOS and Android, push notifications that work without draining the battery
Admin controls and permissions	Sprawl and shadow IT kill security posture	Granular channel permissions, guest access controls, org-wide retention policies, SSO enforcement
Compliance and data residency	Regulated industries and multinationals can't use tools that store data anywhere	SOC 2, ISO 27001, GDPR, optional EU data residency, audit logs with configurable retention
Video and audio calls	Fewer app switches means less friction on quick decisions	Native huddles or calls, screen share, and a clean handoff to full meetings in your video tool
AI features	Summaries and search save real time once message volume gets high	Thread summaries, smart search, catch-up digests. Watch whether AI costs extra (Slack includes it; Teams charges $30/user/month for Copilot)
Pricing and total cost	Seat counts multiply fast	Transparent per-seat pricing, predictable cost as headcount scales, no surprise charges for storage or integrations

Key questions to ask before you buy

Are we already paying for this somewhere? Microsoft Teams is included in most Microsoft 365 Business and Enterprise plans. Google Chat comes with Google Workspace. Before buying Slack, confirm what you already have.
What does our tech stack look like? A Salesforce-heavy SaaS company gets more from Slack's Salesforce integration. A shop running Microsoft 365, Azure DevOps, and SharePoint will find Teams harder to beat on workflow depth.
How strict are our compliance requirements? If you're in financial services, healthcare, or government contracting, ask about FINRA/HIPAA/FedRAMP compliance, audit log retention, and whether the vendor offers a dedicated cloud or on-premises deployment.
Do we need self-hosted or air-gapped deployment? Open-source options like Mattermost and Rocket.Chat run inside your own infrastructure. That's mandatory in some defense and public-sector contexts.
How will we manage guest and contractor access? External collaborators on ad-hoc projects should not get the same access as employees. Ask how guest licenses are priced and how easy it is to revoke access.
What happens when we outgrow the free tier? Free plans cap message history, integrations, and users. Get the paid-tier pricing before you onboard 50 people, not after.
How does this interact with our video conferencing choice? Some teams want chat and video from the same vendor (Teams, Zoom Team Chat). Others prefer best-of-breed (Slack plus Zoom or Google Meet). Both models work, but the second one adds a context-switch.
Who is responsible for admin and onboarding? Chat tools with poor admin UI punish whoever owns IT. Ask for a demo of the admin dashboard, not just the end-user experience.

Top options at a glance

This table is a shortlist, not a full review. It's enough to narrow your field before you run a proper pilot.

Tool	Best for	Free tier?	Starting price (approx, billed annually)
Slack	SaaS-first teams, Salesforce stack, dev-heavy orgs	Yes (90-day message history)	~$7.25/user/month (Pro)
Microsoft Teams	Microsoft 365 shops, regulated industries, large enterprise	Yes (via Microsoft 365 free)	Bundled with M365 plans (~$6/user/month and up)
Google Chat	Google Workspace users who want native doc collaboration	Yes (via Google Workspace free)	Bundled with Workspace (~$6/user/month and up)
Zoom Team Chat	Teams already paying for Zoom Meetings; want one vendor	Yes (with Zoom free)	Bundled with Zoom paid plans
Mattermost	Security-first, self-hosted, DevOps and military/gov use cases	Yes (self-hosted)	~$10/user/month (Professional, cloud)
Rocket.Chat	Open-source deployments, data sovereignty, up to 50 users free	Yes (self-managed, 50 users)	~$7/user/month (cloud)
Twist	Async-first teams, deep work cultures, no real-time pressure	Yes (1-month history)	~$8/user/month (Unlimited)
Discord (Business)	Developer communities, informal team cultures, gaming-adjacent	Yes	Free for most features

For the full head-to-head comparison, see the best Slack alternatives.

How to choose: a decision framework

Match your situation to the row that fits best.

Your situation	Prioritize	Consider avoiding
Already on Microsoft 365, budget-conscious	Microsoft Teams (it's likely already paid for)	Buying Slack on top unless there's a clear productivity case
Heavy Salesforce CRM, SaaS company	Slack (native Salesforce integration, ecosystem breadth)	Teams if your stack is not Microsoft-centric
Google Workspace shop, under 300 people	Google Chat (zero extra cost, native Docs and Meet integration)	Paying for a third tool you'll use in parallel with Chat
Regulated industry (finance, health, gov)	Teams or Mattermost (compliance certifications, audit logs, FedRAMP options)	Tools without clear data residency and audit trail guarantees
Security-first or air-gapped environment	Mattermost or Rocket.Chat (self-hosted, open-source, full data control)	Any cloud-only SaaS tool with limited export options
Async culture, distributed across time zones	Twist or Slack with strict async norms (threads required, no status pings)	Real-time-first tools that reward instant response
Startup under 50 people, tight budget	Slack free or Google Chat free (start free, pay as you scale)	Enterprise-tier contracts with multi-year commitments before product-market fit

Pricing: what to expect

Chat tools cluster into four pricing bands:

Free: Every major player has one. Slack caps message history at 90 days and limits integrations to 10. Google Chat is effectively free inside any Google Workspace plan. Mattermost and Rocket.Chat let you self-host for free with caps on users or features. Free tiers work for pilots and small teams but create friction at scale when you lose search history or hit integration limits.

Starter ($6-$10/user/month): Covers most SMB needs. Slack Pro runs approximately $7.25/user/month billed annually (verify at slack.com/pricing). Google Workspace Business Starter includes Chat at approximately $6/user/month. You get full message history, more integrations, and basic admin controls.

Business ($12-$15/user/month): Adds compliance controls, longer audit log retention, priority support, and (in Slack's case) AI features baked in. Slack Business+ is approximately $12.50/user/month annually. This tier makes sense once you're past 25-50 people and someone owns IT/security.

Enterprise (custom): Negotiate directly. Expect volume discounts of 10-20% off list price at 200 seats and up. Enterprise tiers unlock SSO enforcement, dedicated infrastructure, data residency, and SLA-backed uptime guarantees. Microsoft Teams Enterprise is often the cheapest per-seat option if you are already paying for Microsoft 365 E3 or E5.

What drives the bill up: Per-seat pricing multiplies fast. AI add-ons (Microsoft Copilot is $30/user/month extra) are the biggest gotcha. Guest access licensing, premium support, and overage storage fees can add 15-30% on top of the base rate. Model your total cost at your expected headcount in 18 months, not just today. Rates change often, so confirm on the vendor pages directly, such as Google Workspace pricing and Microsoft Teams plans.

For more on modeling software costs before you sign, see TCO modeling for SaaS purchases and SaaS consolidation strategy.

Frequently asked questions

What's the difference between team chat software and a unified communications platform?

Team chat software (Slack, Mattermost, Twist) focuses on persistent messaging and integrations. Unified communications platforms (Microsoft Teams, Zoom) bundle chat, video, voice, and sometimes phone calls into one product. If your team needs all four channels from one vendor, a UC platform makes more sense. If you prefer best-of-breed and are happy managing two tools, purpose-built chat paired with a separate video tool often delivers a better user experience.

Is Microsoft Teams free?

Microsoft Teams has a standalone free plan, but most organizations get Teams through a Microsoft 365 Business or Enterprise subscription. The $6/user/month Microsoft 365 Business Basic plan includes Teams along with cloud storage, email, and the web versions of Office apps. Confirm your current license before buying a separate chat tool.

Can I use Slack and Microsoft Teams together?

Yes, and 73% of organizations already run two or more collaboration platforms. Slack has a native Microsoft Teams interoperability integration, and you can bridge the two with tools like Mio. That said, running parallel chat tools fragments attention and increases spend. If the answer to "why both?" is unclear, it's usually a sign to consolidate. See our guide on SaaS consolidation for a framework on when consolidation pays off.

How do I evaluate security and compliance fit?

Start with three questions: Does the vendor have the certifications your industry requires (SOC 2 Type II, ISO 27001, HIPAA BAA, FedRAMP)? Can you set retention policies and pull audit logs for your regulators? Where is data stored, and can you enforce a specific region? Self-hosted tools like Mattermost give the most control. Cloud tools like Slack and Teams have strong certifications but store data in their own infrastructure unless you pay for bring-your-own-key encryption.

What's a reasonable pilot process?

Run a 30-day pilot with one team of 10-20 people. Set up your core integrations on day one. After two weeks, survey the team on three things: Did they find what they needed in search? Did notifications pull them away from deep work? Did external guests (clients, contractors) find it easy to join? Use the answers to validate or challenge your shortlist before you commit to a contract.

Make the call

The market in 2026 is mature. Slack, Teams, and Google Chat cover 90% of use cases at competitive price points. The decision usually comes down to one of three factors: your existing Microsoft or Google footprint (use what you're already paying for), your compliance requirements (self-host if data sovereignty is non-negotiable), or your integration priorities (map your top five app connections and check native support before signing).

If you're comparing individual tools side by side, the best Slack alternatives has the full scoring table. For teams also evaluating workspace-level changes, best Google Workspace alternatives and how to choose an AI chatbot platform are worth reading alongside this guide.

Calvin D.

Head of Enterprise Solutions