Open-source alternatives to Discord

Discord in the Communication category. These are the open alternatives we recommend looking at.

Mattermost

Slack-style team chat with channels, threads and integrations.

AGPL-3.0Network copyleft (AGPL)Open core

SaaS: Yes, with conditionsClosed product: No

GitHub stars
39.2k
Deployment
Docker, Helm, Operator
Login/SSO
GitLab OAuth (Team); OIDC/SAML (Enterprise)

Zulip

Team chat organised into topic threads.

Apache-2.0Permissive

SaaS: YesClosed product: Yes

GitHub stars
26.0k
Deployment
Docker, Installer
Login/SSO
SAML, OIDC, LDAP

Element

Matrix chat client with messaging, calls and end-to-end encryption on the web, desktop and mobile.

AGPL-3.0Network copyleft (AGPL)

SaaS: Yes, with conditionsClosed product: No

GitHub stars
13.5k
Deployment
Docker
Login/SSO
OIDC, SAML

This is guidance, not legal advice (inte juridisk rådgivning). Check with a lawyer before deciding.

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