Best Open Source Live Chat Softwares

Browser- and mobile-ready video conferencing software for individuals, teams, and developers. Jitsi is an open-source suite that supports self-hosting, embeds in web and mobile apps, and can be consumed as a managed service (JaaS) for organizations that prefer hosted infrastructure.

Browser-based IRC client for communities and operators who want a modern, embeddable IRC front end. KiwiIRC is suited for website owners, open-source communities, and operators running IRC networks who need a web widget, standalone web client, or self-hosted IRC gateway.

Mattermost is an open, self-hostable collaboration platform built for teams that require strict data control, high resilience, and integrations with DevSecOps and operational tooling. It targets government, defense, critical infrastructure, security operations, and regulated enterprises that need secure messaging, playbooks, and integrations across on-premises, air-gapped, and private cloud deployments.

Zulip is a team chat platform that organizes conversations by topic threads (streams and topics) to help distributed and asynchronous teams stay focused. It is available as an open source self-hosted server and as a managed cloud service, supporting integrations, APIs, and long-lived threaded discussions for engineering, research, education, and business teams.

Customer engagement platform for support teams that want omnichannel conversations, a self-hosted option, and built-in AI assistance. Suited for small to large teams that need chat, email, social messaging, and a help center in one place.

Open source live support chat for websites and apps, designed for organizations that require self-hosting and strong integration options. Live helper chat provides live messaging, chatbot workflows, voice and video calls, screensharing, and multi-channel integrations (Telegram, Twilio/WhatsApp, Facebook Messenger and REST API). It is suitable for IT, healthcare, finance, education and any team that needs on-premises control or custom integrations.