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@github-actions github-actions released this 03 Jun 10:17
· 154 commits to main since this release
v10.9.0
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Nova OS v10.9

A browser-based operating system — windows, a taskbar, a start menu, real
multitasking, a shelf of built-in apps, cross-device accounts, and a full
iOS-style mobile edition. Run it in a browser tab, install it as a PWA, grab the
free Android APK, or install the native desktop app.

10.9 adds background music to Atmos and a pack of five handy utility apps.

What's new in 10.9

🎵 Atmos — background music

  • A new 🎵 toggle (next to the °F/°C button) plays relaxing background
    tracks while Atmos is open, with a Now Playing strip — track title,
    volume slider, next, and stop.
  • Ships with 5 starter tracks, shuffled. It starts only when you press play
    (no surprise autoplay) and stops when you close the app; your volume is
    remembered.
  • Built to grow: dropping a new .mp3 into the music folder makes it show up
    automatically — no code changes needed.

🧰 Five new utility apps

  • 💱 Currency — convert between ~30 world currencies with live daily rates.
    Amount, from/to, a one-tap swap, and the exact conversion rate.
  • 📖 Dictionary — definitions, parts of speech, examples, tap-a-synonym to
    jump words, 🔊 pronunciation audio, and your recent lookups.
  • 🗣️ Translate — translate between 27 languages, swap source/target, and
    copy the result.
  • 🪙 Crypto — live prices for the top 100 coins: 24h change, a 7-day
    sparkline, market cap, and USD / EUR / GBP.
  • 🔳 QR Codes — generate a QR from any text or link (download as PNG),
    and scan one with your camera or by uploading an image. Works fully
    offline.

Every utility uses free, keyless data sources — nothing to sign up for, no API
keys to manage.

Downloads

Grab the file for your platform from the Assets list on this release:

Platform File
Windows ...x64-setup.exe (installer) or ...x64_en-US.msi
macOS (Apple Silicon) ...aarch64.dmg
macOS (Intel) ...x64.dmg
Linux ...amd64.AppImage or ...amd64.deb
Android nova-os.apk

No install, no warnings: you can also just open Nova OS in a browser, or
install it as a PWA — that path never triggers the security prompts below.

Installing & getting past the security warnings

The desktop installers and the Android APK are not signed with a paid publisher
certificate, so your OS shows an "unknown publisher" caution the first time you
open them. This is expected for an independent app — it's a "we don't recognize
who made this" notice, not a virus detection. You clear it once per install.

🪟 Windows — Microsoft Defender SmartScreen

  1. If your browser warns on download, choose Keep → Keep anyway.
  2. Running it shows a blue "Windows protected your PC" box.
  3. Click More info, then Run anyway.

If Defender quarantines it (rare): Windows Security → Virus & threat
protection → Protection history → Restore / Allow on device, then re-run.

🍎 macOS — Gatekeeper

  1. Open the .dmg and drag Nova OS into Applications.
  2. First launch: right-click (or Control-click) the app → Open → Open (a plain
    double-click won't show the override). Or System Settings → Privacy &
    Security → Open Anyway    .

If you get "Nova OS is damaged" on Apple Silicon (the download quarantine flag),
open Terminal and run, then reopen:

xattr -cr "/Applications/Nova OS.app"

🐧 Linux

  • AppImage: chmod +x "Nova OS_10.9.0_amd64.AppImage" then run it. (If it
    needs FUSE: sudo apt install libfuse2.)
  • Debian/Ubuntu (.deb): sudo apt install ./nova-os_10.9.0_amd64.deb

🤖 Android — "unknown sources" + Play Protect

  1. Download nova-os.apk and tap it; Android warns the source isn't allowed.
  2. Tap Settings on the prompt → enable Allow from this source → back →
    Install.
  3. If Play Protect appears, tap More details → Install anyway.
  4. Updates install in place — every release is signed with the same key.

Is it safe?

Yes. The warnings come from the apps not carrying a paid code-signing certificate
(Windows Authenticode / Apple Developer ID), which the OS uses to show a known
publisher name. The project is open source — you can review the code and build
the installers yourself with npm run tauri build. Your data lives in your own
account; no keys are bundled or sent to any Nova server.

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