Download · free

Install Mnemosyne OS.

The full memory OS, local. No account, no mandatory server: you download, you launch. Pick your system — the link hands you the latest installer directly.

Windows

Windows 10 / 11 · 64-bit

Download · Installer 164 MB Portable build · 163 MB

Digitally signed — verified publisher, Certum certificate, timestamped. No "unknown publisher" warning.

macOS

Apple Silicon · M1 and later

Download · .dmg 211 MB

Linux

64-bit · AppImage or .deb

Download · .AppImage 232 MB .deb · Debian / Ubuntu · 129 MB

Version v1.3.4 · Release notes ↗ · Public repo

Files are hosted on our public releases: the button starts the download directly, with no detour through a GitHub page. Nothing to install server-side, no account.

Install & trust

Signing is in progress. Here's how to launch meanwhile.

The installers are being code-signed — a Certum certificate for Windows, Apple notarization for macOS. Until then, your system may show a warning: it's normal and expected. One step, once.

Windows · SmartScreen

If Windows shows "Windows protected your PC", click More info, then Run anyway.

macOS · Gatekeeper

macOS may call the app "damaged" or refuse to open it. Right-click (or Ctrl-click) Mnemosyne OS → Open → Open. If it still blocks, open Terminal and run:

xattr -dr com.apple.quarantine "/Applications/Mnemosyne OS.app"

Linux · AppImage

Make the AppImage executable, then run it. The .deb package installs normally — no signing gate on Linux.

chmod +x Mnemosyne*.AppImage