Fluxer is made by a small team in Sweden, led by its founder Hampus Kraft. The people who use Fluxer pay for it through optional purchases and donations.
Who makes Fluxer?
Fluxer started as Hampus's high school project in 2020. Over several years of private development, with a group of testers who tried each new build and told him what broke, it grew into a full chat app with text, voice, video and communities.
Hampus is close to finishing the Bachelor of Science programme in Computer Engineering at KTH Royal Institute of Technology, and he has worked on Fluxer full-time since his bachelor's thesis there was published in September 2025. He leads Fluxer's development and builds the backend, the web app and the desktop app. Another developer works on the iOS and Android apps, and outside contributors help too.
While studying, Hampus also led web development for a Minecraft: Bedrock Edition server with nearly 6 million players, and he tells the rest in How I built Fluxer.
What Hampus most wants to make great in Fluxer is self-hosting, federation and end-to-end encryption. You can already self-host Fluxer for free with no licence key, and federation and end-to-end encryption are both on our public roadmap.
Is Fluxer a registered company?
fluxer.com is run by Fluxer Platform AB, a Swedish private limited company (aktiebolag) that Hampus founded in Stockholm in 2025. It's registered with Bolagsverket, the Swedish Companies Registration Office, under organisation number 559537-3993, and anyone can check that registration with Bolagsverket for free at any time.
Our company information page lists the company's address and VAT numbers, along with every way to contact us. As a Swedish company, Fluxer Platform AB has a Swedish organisation number and no CNPJ, the registration number for companies in Brazil.
Security researchers test Fluxer's code and services, and they report the vulnerabilities they find to us privately through our responsible disclosure programme.
Is Fluxer connected to Discord?
Fluxer and Discord are separate companies, and Discord has no stake in Fluxer and no say in how it's run. Fluxer's code is its own and open source under the AGPL on GitHub, and it's compatible with large parts of Discord's API, which is why many bots and tools feel familiar. Hampus has never worked for Discord as an employee or a contractor.
How is Fluxer funded?
fluxer.com is funded by the people who use it, and every way to pay is optional. Plutonium is a subscription that raises your own account's limits on fluxer.com, at the prices on the Plutonium page. The Operator Pass is a one-time purchase, and every pass comes with the numbered Operator certificate shown on the Operator Pass page. Anyone can also donate to Fluxer if they'd like to support it without buying anything.
Hampus started the company with his own money. Early supporters started buying Visionary, our lifetime Plutonium offer, in the private beta in late 2025, and those sales kept Fluxer going after it opened to everyone in January 2026. Visionary has sold out.
What stays free?
An account on fluxer.com is free, and so are communities, messages, voice and video calls and screen sharing. Running your own instance is free too, with no licence key. Plutonium only raises the limits of your own account, such as how big your uploads can be, and no purchase upgrades a community or unlocks a feature for it.
Does Fluxer show ads or sell data?
fluxer.com has no ads, no advertising partnerships and no third-party analytics or ad tracking. Sections 3 and 4 of our privacy policy say we don't sell, rent or license your messages or any other personal data, or share it with anyone for their advertising. Section 3.1 of our terms says we never use your content to train AI models.
Where does the money go?
The money pays for running fluxer.com, including its servers, and for building the open source Fluxer software that anyone can use and self-host. Like every Swedish aktiebolag, Fluxer Platform AB files an annual report with Bolagsverket, where anyone can order a copy. Our first annual report is for the period up to the end of 2026.
Does Fluxer have investors?
Hampus owns all of the shares in Fluxer Platform AB and is the company's CEO, and Fluxer has no venture capital and no outside investors of any kind. On the Operator Pass page, he explains in his own words why he won't ever take venture capital. "Investors expect a return, and for chat apps that usually means showing ads or selling data."
Under chapter 5, section 10 of the Swedish Companies Act, anyone can ask to see our share register at the company, which lists who owns each share in Fluxer Platform AB.1
What keeps Fluxer this way?
Any change to our terms or privacy policy that leaves you worse off is announced before it takes effect, with the notice periods in section 9.1 of our terms and section 15 of our privacy policy, apart from the exceptions they list. If you don't accept a change like that, you can export all your data and delete your account before it applies to you.
The Fluxer software is open source under the AGPL v3.0 or later, and every published version stays available under that licence. Fluxer has had no CLA since 18 February 2026, and contributors keep the copyright in the work they've sent since then. Fluxer Platform AB can't relicense that work under other terms without them.
Anyone can run their own instance for free with no licence key, paid tier or reduced edition, and Fluxer staff can't ban anyone from an instance we don't run. The official desktop and mobile apps can connect to any instance. Optional federation, which would let people on different instances talk to each other and move their account from one instance to another, is planned as an experimental draft in 2026 and a stable release in 2027.
End-to-end encryption with no setting to turn it off is planned for voice and video calls in 2026, and for personal notes, DMs and group DMs as an experimental draft in 2026 and a stable release in 2027. Once each part is out, we won't be able to read or hand over the content it protects, and until then nothing on Fluxer is end-to-end encrypted.
You can export a copy of all your data at any time, and you can delete your own messages in bulk with "Delete my messages" under "Privacy" in "User settings".
Which laws protect my data?
Because we're a Swedish company, the GDPR protects your data on fluxer.com wherever it's stored. A government outside the EU can't enforce an order for your data against us without going through Swedish authorities. Until we move fluxer.com's data to our own hardware in Sweden, US authorities can also send orders to our US hosting provider.
Is Fluxer still being worked on?
Hampus works on Fluxer full-time, and we post patch notes on our blog, which you can follow by RSS. We keep our roadmap up to date with the bigger things we plan to build next, and fluxer.com had more than 500,000 accounts on 19 October 2026.
What happens to my communities if Fluxer stops?
We have no plans to shut down fluxer.com. Communities on fluxer.com are stored on our servers, and you can't move one to another instance yet. We plan to let communities move from fluxer.com to their own instance later, and members' messages and memberships would only be copied over when each member agrees. You can export your own account data at any time, whether or not your community plans to move somewhere else.
Fluxer's code is open source under the AGPL, and anyone can run it on their own instance for free and keep it running, whatever happens to fluxer.com. The official desktop and mobile apps can connect to any self-hosted instance too.
Paying and refunds
On the web you pay for Plutonium through Stripe, our payment provider, and in the Android app through Google Play, and we never store your full card number. You can refund a recent Plutonium purchase yourself from the Plutonium page in "User settings", within the time limit in section 4.2 of our terms. Consumers in the EU, the EEA, the UK and Brazil can also withdraw from a Plutonium purchase within the deadline in section 4.3 of our terms.
We never ask for your password or your card details by email or in a message, and you can check whether a message really comes from Fluxer before you reply to it.
Why do some websites rate Fluxer as risky?
Some websites score other sites automatically from things they can measure from the outside, such as a site's age and where its company is registered. A new service, or one run from another country, can get a low score from those signals alone.
Some of those low scores belong to other sites that only look like ours. Our security policy lists the domains Fluxer runs, and you can check a domain against it before you sign in.
Sources
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Aktiebolagslag (2005:551), chapter 5, section 10, Sveriges riksdag, accessed 2026-10-31.