Sell software, plug-ins, games, ebooks & courses.
Keep every dollar.
Actually control who runs it.
Alien XY is a complete store you install on your own server — for anything digital — with checkout, downloads, subscriptions, and (when what you sell is software) a real licence-key system it can check for itself, with ready-made client code in eight languages. No monthly cut of your revenue. No platform that can shut you down.
self-hosted · your server, your data · Python · C++ · C# · TypeScript · Java · Go · Rust · Swift
Renting a storefront is expensive. Building your own licensing server is worse.
Every hosted platform takes a cut of every sale, forever. And if what you sell is software, none of them can tell your program whether the person running it actually paid for it.
A percentage of every sale, forever
Hosted platforms bill themselves as "free to start" and then take 2–10% of your revenue for as long as you sell anything. On real volume, that adds up to far more than owning your own server ever costs.
Selling software with no way to protect it
A licence key is just text unless the program checking it can prove the answer is real. Building that verification yourself — signatures, offline grace periods, device limits — is weeks of work most sellers never get to.
Your business lives on someone else's terms
A policy change, a frozen account, a platform pivot — and your storefront, your customer list and your licence records can vanish overnight. On your own server, that decision is never someone else's to make.
A real store, run from an admin built to actually run a business.
Storefront & checkout
A themeable storefront (15 looks × 4 layouts, live preview), Stripe checkout with subscriptions and trials, coupons, bundles, sale pricing, affiliates, and verified reviews — all editable from the browser, nothing to redeploy.
Command Center admin
Health gauges, revenue, alerts and a maintenance switch on one screen — built the way a business owner actually wants to check on things, not a generic settings page.
Design studio
Colours, layout, corners and fonts, with a live preview — and a separate control for the admin's own look, so your back office doesn't have to match your storefront.
Backups & security
Nightly automatic backups, one-command restore, encrypted credentials at rest, and optional two-factor authentication for every member of staff.
Real analytics
A sales dashboard with MRR, a funnel and traffic-source breakdown, and a downloads report — the numbers you actually check, not a vanity chart.
If what you sell needs a licence key, it can check one for real.
Selling ebooks, presets, courses or anything else that isn't software? None of this applies to you — your download just works. This section is only for people selling actual programs (apps, plug-ins, games) that should unlock with a key.
Customer buys
Your store issues a signed licence key automatically — device-locked, floating seats, a subscription, or a free trial.
Software asks
Your program asks, at start-up and every few hours after that, "is this still valid?"
Signature checked
Every answer is cryptographically signed, so nobody can fake it — and you never have to know how that works.
Your software decides
Full version, a limited demo, a nag screen — your call. This just gives you a straight, trustworthy answer.
Eight languages, ready to paste in.
Python, C++ (JUCE/VST3), C#, TypeScript, Java, Go, Rust and Swift — each with the exact same four-line pattern.
Click around the real thing before you buy it.
The demo isn't a video or a sandbox — it's a genuine running copy of Alien XY: the storefront, checkout, and the full admin, seeded with sample products so there's something to see.
One licence. No revenue share, ever.
Buy it once for your business. You get the full source, every SDK, and the manuals — and you keep every sale that follows.
Alien XY — Starter
One business, one production store, 12 months of free updates.
- Full source code, self-hosted
- All 8 licensing SDKs
- Unlimited products & customers
- All 3 manuals, PDF + web
- 12 months of updates
Alien XY — Growth
One business, unlimited stores or brands, updates for life.
- Everything in Starter
- Run multiple brands on one licence
- Priority email support
- Updates for as long as it's sold
- 1-hour install walkthrough
Agency
Running stores for other businesses, or a custom licence
- Everything in Growth
- Licensed per client business
- White-label rights available
- Volume pricing, or a free/discounted licence when that makes sense
Every plan is source-available under Alien XY's own licence — yours to run and modify, not to resell.
Before you install anything
You get the complete, readable source code -- it's "source-available," not open source. You may run it for your own business and modify it freely, but you may not resell it, redistribute it, or host it as your own competing platform. The sdk/ folder is the one exception: it's separately MIT-licensed, because it's meant to be built into software you sell to your own customers.
No. Installing is one command on a Linux server; everything after that -- store name, logo, colours, products, payments, email -- is configured in the browser. You'd only touch code if you're the one adding the licensing SDK to software you're selling.
Anything delivered as a download: software, plug-ins, games, ebooks, music, video courses, templates, presets. It's built for digital goods specifically -- it doesn't handle shipping physical products.
Honestly: it raises the effort a lot, it doesn't make it impossible. Every reply from your store is cryptographically signed, so nobody can run a fake licence server -- but a determined person can still edit a compiled program to skip the check entirely. Most sellers combine device limits and feature-gating with server-side value (updates, cloud sync, support) as the real reason to stay licensed.
Nothing stops working, ever -- you don't have to keep paying to keep using it. Alien XY is a one-time purchase, not a subscription. The "updates" window (twelve months on Starter, for as long as the product is sold on Growth) only controls whether new versions are free to download during that time; once it ends, your installed copy keeps running exactly as it did, for as long as you want to run it. Want a newer version later? You'd pay once for that upgrade, or move to Growth, whose updates window runs for as long as the product is sold -- but that's optional, never required.
Yes. Install the same version on the new server, copy over your settings file, restore your latest backup, and point your domain at it. Nothing about Alien XY ties your store to one specific machine.
Right after payment you're taken to your order page where you can download your files. We also email you a private link.
All major credit and debit cards, plus wallets like Apple Pay and Google Pay where available.