Quasar.

Choose your system. Unzip the download and start Quasar; there is nothing to install — Python and the quantum engine are inside the zip. By downloading or using Quasar you agree to the Quasar License Agreement. Checksums: SHA256SUMS.txt.

Paying

1. Choose Download for your system, above. Your wallet opens — MetaMask, or any other Ethereum wallet in this browser — and connects if it has not yet.
2. Check the payment it shows you: $98, turned into ETH at Chainlink's ETH/USD rate at that moment, to 0x4F97D90D3A7d2E7f8FeD655dCa87438E910E422B on Ethereum.
3. Approve it in your wallet. The payment goes from your wallet straight to that address; your wallet adds the network's own fee.
4. The download starts once the network has confirmed the payment, usually within a minute.

You pay once. To download Quasar again, on another computer or when a new version is out, connect the same wallet on this page and sign in. Signing in is free and sends no transaction.

A payment on Ethereum cannot be reversed by anyone. If you paid and the download did not unlock, write to [email protected] with the transaction hash.

What it does

• 35 algorithms, 70 variants. Each one runs on a local simulator and, with your own provider account, on real quantum hardware.
• Checked against an independent reference. Every algorithm is verified against closed forms, classical libraries or brute force.
• Your data, your templates. Each algorithm takes a CSV template you can download, fill in and run.

Starting it

• Windows 10/11. Right-click the zip → Extract All (to Downloads or C:\Quasar — not a deeply nested folder), then open Quasar.exe. The first time, Windows says "Windows protected your PC": click More info → Run anyway.
• macOS 14 or newer. Open the zip and drag Quasar into Applications. The first time, macOS says Apple could not verify Quasar: click Done, then System Settings → Privacy & Security → Open Anyway. If macOS says Quasar "is damaged", run xattr -dr com.apple.quarantine /Applications/Quasar.app in Terminal.
• Linux. unzip Quasar-*-linux-x64.zip -d Quasar and run Quasar/quasar. On Ubuntu 24.04 and newer, if it stops with a message about the SUID sandbox helper, run once in the Quasar folder: sudo chown root:root chrome-sandbox && sudo chmod 4755 chrome-sandbox.

The first time it starts, Quasar asks you to accept the Quasar License Agreement.

Why the warnings?

Quasar is not signed with a Microsoft or Apple developer certificate, so your system asks you to confirm the first time. Check your download against the SHA-256 shown under its button above, or in SHA256SUMS.txt:

• Windows: certutil -hashfile <zip> SHA256
• macOS: shasum -a 256 <zip>
• Linux: sha256sum <zip>

Privacy

Quasar collects nothing and has no telemetry. Your data stays on your computer. Only when you set up a quantum-computing provider and press Execute QPU are that run's circuits sent to the provider, with your own account.

That covers the app. This website counts visits with Cloudflare Web Analytics, which uses no cookies. Buying sets one cookie, which is how the site knows that this browser has paid. The record of a purchase holds the wallet address and the transaction that paid, both public on Ethereum already, and no name, email or card.

License

Quasar costs $98, paid once. It is proprietary software, © 2025-2026 Nem088, licensed under the Quasar License Agreement. Its results are not financial, investment or security advice.

There is no automatic update: a new version is a new download from this page. Your settings and saved tokens are kept — they live in your per-user data folder, not in the app folder.

Questions: [email protected]