Fluxer: Open Source Alternative to Discord

Fluxer is a free, open-source instant messaging and VoIP platform built for friends, groups, and communities, with a Discord-style interface — servers, channels, voice and video calls, threaded replies, custom emojis, and moderation tools. It's AGPL-3.0 licensed.

What is Fluxer?

Fluxer targets community-style chat rather than corporate team messaging, making it an alternative to Discord for people who want to self-host and own their data. It also works as a self-hosted alternative to Rocket.Chat for community use cases, though its design leans more toward gaming and social communities than workplace collaboration.

Note: as of mid-2026, Fluxer's self-hosting documentation and API were still being finalized — verify current self-hosting maturity before relying on it in production.

At a glance

Attribute	Details
License	AGPL-3.0
Category	Community
Stack	TypeScript
Self-hosted	Yes (documentation maturing)
Alternatives	Discord, Slack, Rocket.Chat

FAQ

Is Fluxer a free, open-source alternative to Discord?

Yes. Fluxer is AGPL-3.0 licensed and free to self-host, with a Discord-like community-chat experience.

Is Fluxer ready for self-hosting in production?

It's self-hostable, but as of mid-2026 the self-hosting documentation and API were still being finalized, so check the current state of the project before deploying it for critical use.

What are the top open-source alternatives to Discord?

Browse more open-source alternatives to Discord, or explore the full Community category.