Every way to get orOS. orOS is free forever (MIT): every download here costs nothing.
You are inside the installed orOS app, where nothing can be installed. Single apps and APKs install from a browser tab: open useoros.online/download in Chrome or your usual browser.
Use it in your browser
AvailableOpen orOS and start. Nothing to download, works offline after the first visit, your data stays on your device.
Open useoros.onlineInstall it as an app
AvailableWindows, Linux, Chromebook, Android: open useoros.online in Chrome, Edge or Brave and choose Install orOS in the address bar or the browser menu. orOS then gets its own window and icon, and can open your files.
orOS for Windows and Linux (installer)
AvailableInstall orOS on your computer with its own private browser (ungoogled-chromium, no Google). It works offline, keeps itself up to date, and keeps its data on this computer; Dropbox sync carries it to your other devices.
Windows 10/11: no administrator rights needed, orOS goes into the Start menu. The file is not signed yet, so SmartScreen may warn the first time: More info › Run anyway. Also with Scoop: scoop bucket add oros https://github.com/koulaxizis/oros-portable, then scoop install oros.
Version 0.7.0: Windows setup (about 225 MB) · Linux AppImage (about 280 MB, any distribution) · .deb for Debian, Ubuntu, Mint (about 230 MB).
Downloads on GitHuborOS Portable (USB stick)
AvailableRun orOS from a USB stick on any Windows or Linux PC, with or without internet. Your data stays on the stick.
| Full (orOS-Portable) | Lite (orOS-Portable-lite) | |
|---|---|---|
| Size | about 520 MB download, 1–1.5 GB on the stick | about 80 MB |
| Browser | its own private browser (ungoogled-chromium), for Windows and Linux | none: uses one installed on the PC (Chromium, Brave, Edge or Chrome) |
| Works on | any Windows 10/11 or 64-bit Linux PC, the same everywhere | Windows (Edge is always there); Linux only with a Chromium-family browser |
| Google / Microsoft | none | often runs inside Edge or Chrome |
| Watch out | — | a PC with an older browser than the last one used may not open your profile |
Not sure? Take the full edition. Pick lite only for a small download or a small stick.
Stick: 32 GB or more recommended (64 GB is ideal and usually faster), 8 GB minimum. Format it as NTFS (on Linux, exFAT and FAT32 cannot hold the browser's data), unzip, copy everything inside the orOS-Portable folder to the stick, then double-click orOS.exe (Windows) or run ./orOS (Linux). Optional: orOS-sticktest checks whether a stick is fast enough.
Version 0.7.0: download Full (zip, about 535 MB) · download Lite (zip, about 85 MB). Every release, the stick test and the source code are on GitHub, each file with a .sha256 beside it to check the download: sha256sum -c orOS-Portable-*.zip.sha256 on Linux, or Get-FileHash in PowerShell on Windows (same code as in the .sha256 file).
orOS Live USB (bootable)
BetaStart any PC straight into orOS, with no Windows or Linux needed. Write the ISO (about 1.4 GB) to a USB stick (8 GB or more) with Rufus or balenaEtcher, then boot from it (F12/F11/Esc boot menu; on Acer it may be listed as “Linpus lite”). With Rufus, set “Persistent partition size” so your data stays on the stick. The System button has Wi-Fi, sound, Restart, Shut down, monthly system updates and installing orOS on the computer; the Internet button opens a normal browser window. Secure Boot supported. For 64-bit Intel/AMD PCs; not for Macs with Apple chips.
Beta 0.1.0-beta.6: download the ISO (about 1.5 GB). New: users, each with their own orOS, password and files (plus an optional guest and optional encryption per user), and the Internet window fills your orOS Passwords on web pages. It is for testing: on some PCs the very first start shows a white screen for a moment, and orOS then starts again by itself. System › Problem report helps us find the cause.
Downloads on GitHuborOS Drive (your folders in the Vault)
BetaMirror chosen folders of your Windows or Linux computer into your encrypted orOS Vault, both ways. They appear in orOS under Files › orOS Drive and download only when you open them. It can also show the whole orOS disk as a folder (in Windows Explorer, or ~/orOS on Linux).
Sign in with the Dropbox account orOS syncs with and unlock with your sync passphrase: Dropbox sees neither file names nor contents. Windows 10/11 (x64 and ARM64): the setup needs no administrator rights. The file is not signed yet, so SmartScreen may warn the first time: More info › Run anyway.
Beta 0.3.4: download for Windows (setup, about 9 MB) · Linux .deb for amd64 or arm64. Portable Windows zips, Linux tarballs and the source code are on GitHub. Besides Dropbox, it can keep the Vault on your own Nextcloud or WebDAV server.
Android (Beta): back up folders of the phone, keep files offline, share files to orOS, back up new camera photos, and see the whole orOS disk in the phone's Files app. Install it from the orOS F-Droid repository (F-Droid, Droid-ify or Obtainium keep it up to date) or download the APK.
Downloads on GitHuborOS Bridge (your plugins in Studio)
BetaUse the VST3 and CLAP plugins installed on your computer, the ones you bought too, in orOS Studio. The bridge runs your plugins on the computer; Studio sends a track through one and gets it back as a new audio track that plays everywhere.
It also opens your sound card, so Studio records through it: pick the inputs to record, and the song plays and records on the card's own clock, with no drift. Windows: WASAPI, shared or exclusive, and ASIO® drivers (with oros-bridge-asio.dll next to the bridge, in the Windows zip; a separate GPLv3 module). Linux: JACK, PipeWire/PulseAudio and ALSA. In Studio's settings, under Sound card, set Record and play through to orOS Bridge.
Already inside orOS: the orOS installer for Windows and Linux, orOS Portable (Full) and orOS Live USB bring the bridge with them. It starts with orOS, orOS shows its code, and it is updated together with orOS, so there is nothing more to download.
On its own: Windows 10/11 (x64), no setup: run it and keep its window open while you use Studio (it can also sit in the tray). Linux (x64): the .deb, .rpm or AppImage give it a window and a tray icon; the tar.gz runs as ./oros-bridge in a terminal. Then in a track's settings press Plugin on this computer and type the code the bridge shows, once. When a new version is out, the bridge says so in its window and tray and updates in one click, after checking every file against the release's checksums. It listens only on this computer and only orOS can talk to it. Not signed yet: Windows SmartScreen may ask once (More info › Run anyway). Free, MIT.
Ready-made orOS USB stick
Coming soonA fast 64 GB stick with orOS Portable already on it, tested file by file, with a printed quick-start card. Buying one supports orOS.
orOS shop on Ko-fiSingle apps
AvailableInstall just one orOS app with its own icon and window. They share your data with orOS on the same device. Tap an app, then Install. On Windows and Linux they install from the browser, here or in orOS › Settings › Single apps › Install (single apps have no .exe); on Android there are also APKs below. Single apps install as web apps (PWA) on Windows, Linux and Android. On an Android phone where orOS is installed from Chrome, Chrome treats every orOS page as part of that app and offers no install, so use the APK there (below). It works next to any orOS.
Android apps (APK)
AvailableorOS for Android with extras: contacts and events in the phone's own apps, Health Connect, home-screen widgets, plus every single app as its own APK. Download the APK:
Install: open the .apk on the phone and allow installing from this source. If a download stops at 100% and never finishes, it was opened inside an installed app: open this page in a normal browser tab, or use the release page on GitHub.
Updates: every APK here is also in the orOS repository for F-Droid, Droid-ify and Obtainium, which install updates for you. With F-Droid or Droid-ify installed, tap Add the orOS repository. Elsewhere, add https://koulaxizis.github.io/oros-fdroid/repo by hand; fingerprint 2A066758DF27F6AFDF6D96F72D575E3E04844B9F85A22A54B7F2C03905A11846. Inside orOS, Settings › Single apps also has these links, including one per app for Obtainium.
orOS browser add-on
Install by handFill your orOS Passwords on any site: logins, 2FA codes, cards, identities and addresses. It also saves the page you are on to orOS Bookmarks and searches orOS from the address bar. For Chrome, Edge, Brave and Firefox. Your vault stays encrypted; only the key is kept in the browser's memory until it locks.
Download the add-on (.zip)Chrome, Edge, Brave: unzip it into a folder you keep. Open chrome://extensions (edge://extensions, brave://extensions), turn on Developer mode, press Load unpacked and choose that folder. Pin the orOS icon to the toolbar. To update, unzip the new zip over the same folder and press the reload arrow on the add-on.
Firefox: download the Firefox zip (the one above is for Chrome, Edge and Brave), unzip it, open about:debugging#/runtime/this-firefox, press Load Temporary Add-on and choose manifest.json. Firefox removes it when it closes, until the add-on is on addons.mozilla.org.
First use: open orOS in a tab and press the orOS icon (or Ctrl+Shift+L). Press Allow access to orOS once so it can copy your encrypted vault, then unlock with your master password. On a site, choose an entry and it fills the form. If a card number sits in a payment frame from another site, the add-on names that site and asks first.
Add-on sourceFree forever, MIT licence. Support orOS on Ko-fi. Privacy policy · Source code · Media kit
Use at your own risk: orOS comes with no warranty and no liability for lost data, so keep backups (disclaimer).
Support e-mail: koulaxizis@glarolykoi.net