Editorial picks, ordered by our view of fit for 5-50 person teams. We haven't lab-tested them, and no vendor paid for placement. "Best value" marks the lowest verified annual cost for 10 users among these picks; it isn't a quality score.
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Slack-style channels: Professional is US$1.80/user/mo billed annually, and Standard is a flat US$16.20/mo for up to 25 users.
Price: Free plan. Standard US$16.20/mo for up to 25 users (billed annually). Professional US$1.80/user/mo, Enterprise US$3.60/user/mo (billed annually)
- Professional plan is $1.80/user
- Flat Standard plan for up to 25 users
- Smaller integration ecosystem than Slack
Source: zoho.com/cliq/pricing.html · checked Oct 14, 2026
Chat plus meetings for $4/user/mo, or included in Microsoft 365.
Price: $4.00/user/mo, paid yearly
- Very cheap per user
- Familiar Teams experience
- No Office desktop apps or business email
Source: microsoft.com/en-us/microsoft-teams/compare-microsoft-teams-business-options · checked Oct 14, 2026 · Max users assumed 300 like other business plans: UNVERIFIED
Stay on Slack for free if 90 days of history is enough.
Price: $0: 90 days of message history, up to 10 apps, 1:1 huddles
- 90-day history limit
- Huddles 1:1 only
Source: slack.com/pricing · checked Oct 14, 2026
Open-source, end-to-end-encrypted chat you can self-host.
Price: Free app; self-hosted, open-source Matrix backend
- Open standard, end-to-end encryption
- Self-hosting takes real admin work
Source: element.io/pricing · checked Oct 14, 2026 · Hosted business pricing not captured