Zammad

CommunicationAGPL-3.0FreemiumSelf-HostedWeb

Web-based helpdesk and customer support system with email, chat, and social media integration

GitHub Repository Official Website

GitHub stars

Alternative to

Zendesk

Communication

Intercom

Communication

Revolt

User-first chat platform built with modern web technologies as an alternative to Discord

AGPL-3.0Free

Spacebar

Self-hostable Discord-compatible chat platform with federation and full API compatibility

AGPL-3.0Free

Papercups

Open-source live chat widget for websites with real-time messaging and Slack integration

MITFree

Wire

Secure collaboration platform with encrypted messaging, video calls, and file sharing for teams

GPL-3.0Freemium

Mattermost

Secure team messaging platform with channels, file sharing, and workflow automation for enterprises

otherFreemium

WeeChat

Fast and extensible IRC client with multi-protocol support and scripting capabilities

GPL-3.0Free

Zammad

GitHub stars

Alternative to

Revolt

Spacebar

Papercups

Wire

Mattermost

WeeChat

Reviews

Zammad

GitHub stars

Alternative to

Revolt

Spacebar

Papercups

Wire

Mattermost

WeeChat

Reviews

Zammad

GitHub stars

Alternative to

Related Alternatives

Revolt

Spacebar

Papercups

Wire

Mattermost

WeeChat

Reviews

Zammad

GitHub stars

Alternative to

Related Alternatives

Revolt

Spacebar

Papercups

Wire

Mattermost

WeeChat

Reviews