Mattermost
★ 38.4kA self-hosted alternative to Discord, Microsoft Teams, Slack
proprietaryOpen Core — Some Features Paid15 Containers — 15 containers — heavy hosting footprintDocker · K8s · Helm +3No external DB2 documented maintainers
About
Mattermost is an open core collaboration platform designed for teams that want to self-host their communication and workflow stack. It provides a web-based interface and native clients for desktop...
Community Ratings
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Features
- chat
- workflow automation
- voice calling
- screen sharing
- AI integration
- web interface
- native mobile apps
- desktop apps
- API integrations
- slash commands
Details
- Last Updated
- Jul 12, 2026
- Created
- Jun 15, 2015
- Install Methods
- dockerkuberneteshelmbinarypackage-managersource
- Requirements
- PostgreSQLGoReact
- API
- REST
- Runtime / Stack
- GoDockerK8S
- Privacy & Independence
- Cloud: Optional
- Deployment
Deployment: Docker Compose ✓15 Containers — heavy hosting footprintRuns as 15 containers
Docker Compose
15 services
no resource limits declared
server/build/docker-compose.yml · @ aa03fae · scanned Jun 4, 2026
services:
postgres:
extends:
file: docker-compose.common.yml
service: postgres
tmpfs: /var/lib/postgresql/data
minio:
extends:
file: docker-compose.common.yml
service: minio
azurite:
extends:
file: docker-compose.common.yml
service: azurite
inbucket:
extends:
file: docker-compose.common.yml
service: inbucket
openldap:
extends:
# ...
Open-source health
FOSS with issues
agplv3-mixedcopyleft-claopen-washingopen-corepoisoned-sourcevc-fundingcomplex-licensingsso-taxunclear-foss-offering
Source: isitreallyfoss.com · reviewed Jun 2025
Tags
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Metadata extracted from README on Mar 25, 2026
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