Rocket.Chat vs Slack: Pricing Comparison 2026
Side-by-side pricing comparison of Rocket.Chat and Slack. See all plans, features, and costs at a glance.
Bottom line: Rocket.Chat starts at Custom pricing and Slack starts at $8.75/mo. Compare all 7 pricing tiers side by side.
Last updated: August 31, 2026
Rocket.Chat vs Slack: Quick Pricing Facts
| Feature | Rocket.Chat | Slack |
|---|---|---|
| Starting Price | Custom pricing | $8.75/mo |
| Number of Plans | 3 | 4 |
| Free Tier | No | Yes |
| Pricing Model | open-source | per-seat |
| Annual Discount | N/A | N/A |
Rocket.Chat and Slack are both priced at Custom pricing, making them equally accessible Communication tools. Together they offer 7 pricing plans with 63 features compared, so the best choice comes down to which features match your needs.
Slack stands out with a free plan for getting started. Rocket.Chat uses open-source pricing while Slack uses per-seat pricing, which may affect your total cost at scale.
Review the detailed tier-by-tier comparison above to see exactly which features are included at each price point and find the best fit for your Communication needs.
| Pricing Plans |  Rocket.Chat Try free |  Slack Try free |
|---|---|---|
| Tier 1 | Free $0/monthCheapest Includes
| |
| Tier 2 | Pro $9/monthCheapest Includes
| |
| Tier 3 | Business+Popular $18/monthCheapest Includes
| |
| Tier 4 | - | Enterprise+ Custom pricing Includes
|
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What Reviewers Say
Which Should You Choose?
Choose Rocket.Chat if:
- •You need a self-hosted communication platform for data sovereignty or air-gapped deployments
- •Rocket.Chat's open-source core lets you customize, extend, and audit the platform's code
- •Omnichannel support (live chat, email, social media, SMS) in one platform serves customer-facing teams
- •Your organization requires on-premises deployment with full control over encryption and data storage
Choose Slack if:
- •You want the most polished team messaging experience with the industry's largest integration ecosystem
- •Slack's 2,600+ app marketplace and Workflow Builder automate your communication workflows
- •Slack Connect enables secure collaboration with external partners without managing infrastructure
- •Your team values UX refinement, performance, and reliability that cloud-native platforms deliver
Rocket.Chat and Slack compete for team messaging with fundamentally different deployment models. Rocket.Chat is open-source with self-hosted and cloud options. Community (free, self-hosted) includes unlimited users and messages. Pro at $4/user/month adds omnichannel, video conferencing, and enhanced features. Enterprise adds high availability, audit logs, and premium support. Slack is cloud-only. Free includes 90 days of message history. Pro at $8.75/user/month adds unlimited history and integrations. Business+ at $12.50/user/month adds compliance and SSO. Rocket.Chat's differentiator is omnichannel messaging. Live chat widgets on your website, email integration, social media channels (WhatsApp, Facebook Messenger, Instagram), and SMS - all routed into one team inbox. This makes Rocket.Chat appealing for customer support teams that want internal chat and customer communication in one platform. Slack has no native customer-facing chat capability. Slack's advantages remain UX and ecosystem. The messaging experience is smoother, integrations are deeper, and the platform is more reliable at scale. Self-hosting Rocket.Chat requires infrastructure maintenance, updates, and security patching that Slack's cloud eliminates. For organizations needing self-hosted messaging with customer-facing omnichannel support, Rocket.Chat provides unique capabilities. For teams wanting the best cloud messaging experience, Slack's polish and ecosystem win.
Frequently Asked Questions: Rocket.Chat vs Slack
How many pricing plans does Rocket.Chat have vs Slack?
Does Rocket.Chat or Slack offer a free plan?
What is the most popular Slack plan?
Does Rocket.Chat or Slack offer custom enterprise pricing?
What pricing models do Rocket.Chat and Slack use?
How do Rocket.Chat and Slack compare for Communication?
Sources
- Rocket.Chat Official Pricing- Vendor pricing page
- Slack Official Pricing- Vendor pricing page
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