Fluxer is a young (first commit January 2026) Discord-style chat and VoIP app for friends, groups and communities, licensed AGPL-3.0. Self-hosting runs the web app, API, gateway, search and voice in Docker on one machine, and needs 2 vCPU and 8 GB RAM by default (4 GB with low-memory overrides). Apps exist for Windows, macOS, Linux, Android (beta) and iOS (TestFlight). It targets communities rather than workplaces; Slack-style compliance and enterprise SSO are not documented.
Cite this pageRepoQuarry. “Fluxer.” Checked 15 Oct 2026. https://repoquarry.dev/projects/fluxer
How much of Slack does it replace?
3 of 5 jobs. Community chat with voice and search; young project aimed at groups and communities, not workplace features.
Partial:Channels and direct messagesPartial replacement
No:Threaded conversationsNot covered
Partial:Voice and video huddlesPartial replacement
No:IntegrationsNot covered
Partial:Search and message historyPartial replacement
For threaded conversations, integrations, see other Slack alternatives. You may also need to build an interface, an API server and hosting yourself.
Facts, with sources
Every answer links to where we found it. We read the documentation; we did not install it.
Runs on my machine?Confirmed:Self-hosted with Docker or Kubernetes, or the hosted fluxer.app serviceThe pass unlocks nothing in the software, and self-hosting stays free.docs.fluxer.app · get-started ↗1d ago
Code licencePartial:AGPL-3.0-or-later; static assets under CC BY-SA 4.0The source is licensed under the AGPL-3.0-or-later license.github.com · fluxer#license ↗1d ago
Commercial usePartial:Allowed under AGPL-3.0; publish changes if you offer a modified version over a networkThe source is licensed under the AGPL-3.0-or-later license.github.com · fluxer#license ↗1d ago
Paid services needed?Partial:None required; optional Operator Pass (support perks) and Fluxer PlutoniumThe pass unlocks nothing in the software, and self-hosting stays free.docs.fluxer.app · get-started ↗1d ago
HardwareConfirmed:2 vCPU and 8 GB RAM minimum with defaults (4 GB with low-memory overrides); 4 vCPU and 16 GB for a small active community; 20 GB diskRAM 8 GB minimum with the shipped defaults, 16 GB for a small active community.docs.fluxer.app · get-started ↗1d ago
Operating systemsConfirmed:Server on any Docker host (Linux, or Mac/Windows with Docker Desktop); apps for Windows, macOS, Linux, Android (beta), iOS (TestFlight)Any machine that runs Docker with Linux containers. A Linux server, or a Mac or Windows PC with Docker Desktopdocs.fluxer.app · get-started ↗1d ago
Setup effortConfirmed:Medium; Docker Compose with a domain and open voice ports, about 30 minutesAllow about 30 minutes, most of it spent downloading images.docs.fluxer.app · get-started ↗1d ago
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