Comparison

Rocket.Chat vs Slack

On the evidence we track, Slack leads this comparison with a composite score of 82/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Rocket.Chat full profile →Slack full profile →

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Rocket.Chat57

★Slack82

Attribute comparison across 2 tools
Attribute	Rocket.Chat	SlackLeader
Vioscale score	57 / 100high · 76%	82 / 100medium · 54%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	commercial	commercial
Price levelpricing.price_level	low	low
Transparentpricing.transparent	✗	✓
Integrations
Countintegrations.count	8	2,500
Security
Disclosure policysecurity.disclosure_policy	✓	✓
Gdprsecurity.gdpr	✓	✓
Hipaasecurity.hipaa	✓	-
Iso27001security.iso27001	✓	-
Scorecardsecurity.scorecard	8.7	-
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40rocket.chat%2Fapps-engine&per_page=100 · Last 12m: 0	-
Reliability
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	339	-
Github starsadoption.github_stars	46,031	-
Activity
Commits last 30dactivity.commits_last_30d	100	-
Release
Historyrelease.history	20 items	-
Language
Primarylanguage.primary	TypeScript	-
Market
Availabilitymarket.availability	Available worldwide	Available worldwide

Score

Vioscale score

Rocket.Chat57 / 100high · 76%

Slack82 / 100medium · 54%

Pricing

Free tier

Rocket.Chat✓

Slack✓

Model

Rocket.Chatcommercial

Slackcommercial

Price level

Rocket.Chatlow

Slacklow

Transparent

Rocket.Chat✗

Slack✓

Integrations

Count

Rocket.Chat8

Slack2,500

Security

Disclosure policy

Rocket.Chat✓

Slack✓

Gdpr

Rocket.Chat✓

Slack✓

Hipaa

Rocket.Chat✓

Slack–

Iso27001

Rocket.Chat✓

Slack–

Scorecard

Rocket.Chat8.7

Slack–

Vulnerabilities

Rocket.ChatCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=%40rocket.chat%2Fapps-engine&per_page=100 · Last 12m: 0

Slack–

Reliability

Status page

Rocket.Chat✓

Slack✓

Adoption

Dependent repos

Rocket.Chat339

Slack–

Github stars

Rocket.Chat46,031

Slack–

Activity

Commits last 30d

Rocket.Chat100

Slack–

Release

History

Rocket.Chat20 items

Slack–

Language

Primary

Rocket.ChatTypeScript

Slack–

Market

Availability

Rocket.ChatAvailable worldwide

SlackAvailable worldwide

Capabilities

Feature-by-feature on the axes that matter for collaboration software. “-” means undocumented, not absent.

Capability comparison for Collaboration Software
Capability	Rocket.Chat	Slack
Modality
Messaging	✓	✓
Video meetings	✓	-
Whiteboard	-	-
Meetings
Screen sharing	✓	-
Recording / transcription	-	-
Security
End-to-end encryption	✓	-
SSO / SCIM	✓	-
Access
Guest / external access	✓	✓
Compliance
Compliance controls	✓	✓
Deployment
Hosting	Cloud + self-hosted	Cloud only
Scale
Max participants	4000+	-
Ecosystem
App marketplace	✓	✓
Public API / bot framework	✓	✓
Commercial
Free tier	✓	-

Modality

Messaging

Rocket.Chat✓

Slack✓

Video meetings

Rocket.Chat✓

Slack-

Whiteboard

Rocket.Chat-

Slack-

Meetings

Screen sharing

Rocket.Chat✓

Slack-

Recording / transcription

Rocket.Chat-

Slack-

Security

End-to-end encryption

Rocket.Chat✓

Slack-

SSO / SCIM

Rocket.Chat✓

Slack-

Access

Guest / external access

Rocket.Chat✓

Slack✓

Compliance

Compliance controls

Rocket.Chat✓

Slack✓

Deployment

Hosting

Rocket.ChatCloud + self-hosted

SlackCloud only

Scale

Max participants

Rocket.Chat4000+

Slack-

Ecosystem

App marketplace

Rocket.Chat✓

Slack✓

Public API / bot framework

Rocket.Chat✓

Slack✓

Commercial

Free tier

Rocket.Chat✓

Slack-

What each one is

The product in its own terms, so the numbers below have context.

Rocket.Chat

Rocket.Chat is an open-source communications system designed for organizations requiring secure messaging, voice, video, and collaboration with complete infrastructure control and support for regulated environments.

Independently observed

Slack

Leader

A workspace tool that consolidates team messaging, third-party software integrations, and automated workflows to help distributed teams coordinate work and manage customer interactions more effectively.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Rocket.Chat

Quote-basedFree tier

StarterFree
CommercialContact sales
GovernmentContact sales
DefenseContact sales

as of 2026-08-14verify ↗

Slack

Leader

from £5.75/moSubscriptionFree tier

From £0 (free tier) to £7/user/month (Pro). Free tier available.

FreeFree
- 90 days of message history
- Up to 10 apps from Slack App Directory
- 1:1 audio and video meetings with screen sharing
- 1:1 external messages via Slack Connect
- SAML-based single sign-on
- +9 more
Pro£7/user/month (£5.75/user/month billed annually)
- Unlimited message history
- Unlimited app integrations
- 2,600+ apps in Slack App Directory

as of 2026-08-05verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Rocket.Chat	Slack
WebPlatforms	✓	✓
iOSPlatforms	✓	✓
AndroidPlatforms	✓	✗
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✗
On-premiseDeployment	✓	✗
Air-gappedDeployment	✓	✗

Platforms

Web

Rocket.Chat✓

Slack✓

iOS

Rocket.Chat✓

Slack✓

Android

Rocket.Chat✓

Slack✗

Deployment

Cloud / SaaS

Rocket.Chat✓

Slack✓

Self-hosted

Rocket.Chat✓

Slack✗

On-premise

Rocket.Chat✓

Slack✗

Air-gapped

Rocket.Chat✓

Slack✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (1)

Loom

Rocket.Chat

8 total - 7 not shared

Bitbucket Cloud
GitHub
Google Drive
Google Calendar
Google Workspace
Trello
WhatsApp

Independently observed

Slack

Leader

8 total - 7 not shared

Salesforce
Atlassian
Lucid
Miro
Smartsheet
Mural
Zapier

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.