Comparison

Mattermost vs Whereby

On the evidence we track, Whereby leads this comparison with a composite score of 86/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Mattermost full profile →Whereby full profile →

Machine formatsJSON Markdown GraphQLor send Accept: application/json

Mattermost59

★Whereby86

Attribute comparison across 2 tools
Attribute	Mattermost	WherebyLeader
Vioscale score	59 / 100medium · 66%updating	86 / 100medium · 72%updating
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	commercial	freemium
Price levelpricing.price_level	low	low
Transparentpricing.transparent	✗	✓
Integrations
Countintegrations.count	14	7
Security
Disclosure policysecurity.disclosure_policy	✓	✓
Gdprsecurity.gdpr	✓	✓
Hipaasecurity.hipaa	-	✓
Iso27001security.iso27001	-	✓
Pcisecurity.pci	-	✓
Scorecardsecurity.scorecard	7.3	-
Soc2security.soc2	-	✓
Vulnerabilitiessecurity.vulnerabilities	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=mattermost-redux&per_page=100 · Last 12m: 0	-
Reliability
Sla pctreliability.sla_pct	-	99.9
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	371	-
Github starsadoption.github_stars	38,909	-
Activity
Commits last 30dactivity.commits_last_30d	100	-
Release
Cadence daysrelease.cadence_days	1	-
Historyrelease.history	20 items	-
Language
Primarylanguage.primary	TypeScript	-
Market
Availabilitymarket.availability	Available worldwide · Popular in US, CA, GB, EU, JP · HQ US	Available worldwide · Popular in EU, US · HQ NO

Score

Vioscale score

Mattermost59 / 100medium · 66%updating

Whereby86 / 100medium · 72%updating

Pricing

Free tier

Mattermost✓

Whereby✓

Model

Mattermostcommercial

Wherebyfreemium

Price level

Mattermostlow

Wherebylow

Transparent

Mattermost✗

Whereby✓

Integrations

Count

Mattermost14

Whereby7

Security

Disclosure policy

Mattermost✓

Whereby✓

Gdpr

Mattermost✓

Whereby✓

Hipaa

Mattermost–

Whereby✓

Iso27001

Mattermost–

Whereby✓

Pci

Mattermost–

Whereby✓

Scorecard

Mattermost7.3

Whereby–

Soc2

Mattermost–

Whereby✓

Vulnerabilities

MattermostCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=mattermost-redux&per_page=100 · Last 12m: 0

Whereby–

Reliability

Sla pct

Mattermost–

Whereby99.9

Status page

Mattermost✓

Whereby✓

Adoption

Dependent repos

Mattermost371

Whereby–

Github stars

Mattermost38,909

Whereby–

Activity

Commits last 30d

Mattermost100

Whereby–

Release

Cadence days

Mattermost1

Whereby–

History

Mattermost20 items

Whereby–

Language

Primary

MattermostTypeScript

Whereby–

Market

Availability

MattermostAvailable worldwide · Popular in US, CA, GB, EU, JP · HQ US

WherebyAvailable worldwide · Popular in EU, US · HQ NO

Capabilities

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

Capability comparison for Collaboration Software
Capability	Mattermost	Whereby
Modality
Messaging	✓	✓
Video meetings	✗	✓
Whiteboard	✗	✓
Meetings
Screen sharing	✗	✓
Recording / transcription	-	Recording
Security
End-to-end encryption	-	✓
SSO / SCIM	✓	-
Access
Guest / external access	-	✓
Compliance
Compliance controls	✓	✓
Deployment
Hosting	Cloud + self-hosted	Cloud only
Scale
Max participants	-	200
Ecosystem
App marketplace	✓	✗
Public API / bot framework	✓	✓
Commercial
Free tier	✓	✓

Modality

Messaging

Mattermost✓

Whereby✓

Video meetings

Mattermost✗

Whereby✓

Whiteboard

Mattermost✗

Whereby✓

Meetings

Screen sharing

Mattermost✗

Whereby✓

Recording / transcription

Mattermost-

WherebyRecording

Security

End-to-end encryption

Mattermost-

Whereby✓

SSO / SCIM

Mattermost✓

Whereby-

Access

Guest / external access

Mattermost-

Whereby✓

Compliance

Compliance controls

Mattermost✓

Whereby✓

Deployment

Hosting

MattermostCloud + self-hosted

WherebyCloud only

Scale

Max participants

Mattermost-

Whereby200

Ecosystem

App marketplace

Mattermost✓

Whereby✗

Public API / bot framework

Mattermost✓

Whereby✓

Commercial

Free tier

Mattermost✓

Whereby✓

What each one is

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

Mattermost

Mattermost is an open-source messaging and collaboration platform designed for organizations requiring data sovereignty, self-hosting control, and mission-critical availability. It integrates with external tools and workflows, supports high-availability deployments, and serves government, defense, and enterprise customers needing secure, compliant operations.

Independently observed

Whereby

Leader

Whereby provides secure video calling with built-in compliance (HIPAA, GDPR, ISO 27001) for telehealth, education, and general business use. Available as a managed service for individuals/teams or as an embedded API for product builders.

Independently observed

Pricing

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

Mattermost

HybridFree tier

Free open-source tier available; commercial E10 and E20 enterprise editions

Open SourceFree
Enterprise E10-
Enterprise E20-

as of 2026-08-14verify ↗

Whereby

Leader

from $0.00/moHybridFree tier

From $9.99/mo for Build plan with 2,000 included participant minutes. Free tier available. Usage-based metering for recording, transcription, and overage minutes.

ExploreFree
- Up to 2,000 participant minutes/mo
- Video calls
- Chat
- Screensharing
- Waiting rooms
- +6 more
Build$9.99/mo base + usage metering for participants, recording, and transcription
- 2,000 included participant minutes/mo
- Additional participant minutes at $0.004/min
- Cloud recording at $0.01/min
- Session transcriptions from $0.0065/unmuted min
- Live captions from $0.0065/unmuted min
- +16 more
EnterpriseContact sales
- Custom participant minute allowances
- Volume discounts
- Early access to new features
- Implementation support
- Technical Success Manager
- +4 more

as of 2026-08-13verify ↗

Platform & deployment

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

Platform and deployment support comparison
Supports	Mattermost	Whereby
WebPlatforms	✓	✓
iOSPlatforms	✓	✗
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✗
On-premiseDeployment	✓	✗
HybridDeployment	✓	✗

Platforms

Web

Mattermost✓

Whereby✓

iOS

Mattermost✓

Whereby✗

Deployment

Cloud / SaaS

Mattermost✓

Whereby✓

Self-hosted

Mattermost✓

Whereby✗

On-premise

Mattermost✓

Whereby✗

Hybrid

Mattermost✓

Whereby✗

Integrations

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

In common (1)

Slack

Mattermost

14 total - 13 not shared

Git
Jenkins
GitLab
GitHub
Twitter
Bugzilla
RSS
Gerrit
Redmine
Mercurial
SVN
Threema
Pexip

Independently observed

Whereby

Leader

7 total - 6 not shared

Google Calendar
Microsoft Outlook
Google Docs
Trello
YouTube
Chrome

Independently observed

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