Alternatives to: Discord

Open source alternative communication platform

Zulip is an Open Source team chat application that combines the best of email and chat for enhanced team communication and productivity.

Rocketchat

Rocket.Chat is a secure, collaborative communication platform that enables real-time communication and streamlined workflows for teams and organizations.

Nextcloud Social

Nextcloud Social is a collaborative app that adds social networking features to Nextcloud, fostering communication and engagement among users.

Agorakit is an Open Source groupware for citizens to organize and collaborate online, facilitating communication, scheduling, and information sharing.

MikroChat is a minimalist, self-hosted chat app for teams that offers full control over communication with essential features and no vendor lock-in.

Apprise

Apprise - Push Notifications that work with just about every platform!.

Treebal Pro is a secure, ethical, and sovereign instant messaging platform for organizations, offering customizable communication management with a focus on privacy, efficiency, and environmental responsibility.

AtomJump is an open-source, no-download-required messaging PWA with expandable plugins, supporting global communication and privacy-focused features.

Mumble

Mumble is a free, open-source, low-latency voice chat application for secure and high-quality communication, popular in gaming, communities, and professional settings.