Fluxer – European messaging app
Fluxer is open-source chat, voice and video software from Sweden, built as an alternative to Discord. It began as one student's project and now has a small team. Self-hosting unlocks every premium feature for free.
Quick facts
Self-hosting unlocks every paid feature for free, and voice and video run on a custom low-latency stack the developer built rather than an off-the-shelf library.
Official self-hosting support is still being finished as of 2026, the team is just two people, and there's no native mobile app yet, only a web app and unofficial installs.
Why does it score 100?
Registered as an AB in Stockholm, Sweden – a full EU member state.
Independent and bootstrapped, built solo by one developer and funded by donations and premium subscriptions, with no outside investors.
Runs on its own infrastructure, with a self-hosted option that unlocks every feature for free.
Fully open source under AGPL-3.0, though official self-hosting support is still being finished as of 2026.
See how they compare
Fluxer
SignalWhat does it replace?
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