Mnemosyne OS
New The documentation is live: every engine, step by step. docs.mnemosyne-os.io →

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.

Version v1.4.4 · 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.

Verify your download

SHA-512 checksums, read from the manifests published with the release (the same files the in-app updater checks a download against). If the digest you compute differs, do not run the file.

Mnemosyne-OS-Infinity-1.4.4-Setup-x64.exe
6211de75a7a1eea89e3f6f213ceeaeeed14a4c778719e33a3d03b45f846095da65c137b722a93c4442bac7d5747caa7121e5fe5ff34f47e1bcba8b9147b2b374 Compare with certutil -hashfile "Mnemosyne-OS-Infinity-1.4.4-Setup-x64.exe" SHA512
Mnemosyne-OS-Infinity-1.4.4-mac-arm64.dmg
d680eea26ebd7b05ed4bda7a13ff3c9cee716495a1d051fe87c506e29006c72e26fa5eb56d5f331df0d9660a8784bb44ca81f107a4605ed5374e0e0a3a759fb3 Compare with shasum -a 512 "Mnemosyne-OS-Infinity-1.4.4-mac-arm64.dmg"
Mnemosyne-OS-Infinity-1.4.4-x86_64.AppImage
4a84ca90bb83c381956cbe6c27e55bfa3b547d1991a42a10c5939b5fac08f25ef3944a8df83940512932ee3fad73a0cfa22c9ee1ab3e232d04314775c50cff14 Compare with sha512sum "Mnemosyne-OS-Infinity-1.4.4-x86_64.AppImage"
Mnemosyne-OS-Infinity-1.4.4-amd64.deb
f2de00851bc5260432a5b2015bd1356f652486660f5a8a1f281dac9476798a601a180ef8fe8ffd83f2634fb37102e297c534d231b3de329f846d8083371c8aec Compare with sha512sum "Mnemosyne-OS-Infinity-1.4.4-amd64.deb"

The first five minutes

Four screens, and your memory answers.

What you will see right after installing. No account to create: the download is the signup.

  1. 01 "+ New Vault" A name, a type. The vault exists. It is a file on your disk.
  2. 02 "Feed it now?" The app offers a folder to watch. Its files enter memory, and again whenever they change.
  3. 03 Sources The vault's watched folders. "Add a folder to watch…", or rescan.
  4. 04 Settings The "RAG attention" dial, the sources, the kinds of memory. Everything is tunable later, nothing is required first.

The full walkthrough, with these screens: Your first vault ↗

System requirements

Will it run on your machine?

The app itself is light. What moves the needle is the models you choose to run: cloud stays feather-light, a full local stack wants memory and disk.

Memory · RAM

8 GB minimum

runs in reduced mode: cloud models, lighter local features.

32 GB recommended

comfortable with local models running on your machine.

Disk · free space

200 MB light end

cloud mode, hardly any local models.

30 GB heavy end

full local stack: LLM, voice and vision models on disk.

Processor · platforms

Windows

x64 (Intel / AMD) · Windows 10 or 11.

macOS

Apple Silicon only (M1 or later). Intel Macs are not supported.

Linux

x86-64 (Intel / AMD). No ARM build (Raspberry Pi, etc.).

You pick which models to download, from Settings. That choice alone decides where you land between the two ends.

Install & trust

Windows is signed. Here's first launch.

The Windows installer is code-signed: Certum certificate, verified publisher "TONY TROCHET", RFC-3161 timestamped. On macOS, Apple notarization is on its way (ad-hoc signed meanwhile). A warning may still appear on first launch: one step, once.

Windows · SmartScreen

The installer is signed, but a fresh certificate has to earn its SmartScreen reputation, so "Windows protected your PC" may still appear. Click More info, then Run anyway. The warning retires itself as downloads accumulate.

macOS · Gatekeeper

Ad-hoc signed (Apple Silicon), notarization coming. 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