Every Account, its own browser.

Run as many Accounts as you need from one window. Each opens in a sealed browser of its own, with its own cookies, its own device and its own proxy.

Download the Windows betaSee every feature

Windows 10 and 11. A one-day free trial in the app, no card needed.

One windowAcct 01Acct 02Acct 03Acct 04Session 01Session 02Session 03Session 04Your machineThe internetExit A203.0.113.24Exit B198.51.100.7Exit C192.0.2.61Exit D203.0.113.9012341SessionIts own cookies,storage and cache.2SealNothing crosses,in or out.3DeviceOne machine itpresents as, whole.4ExitIts own IP,from its own proxy.One window01020304Session ASession BSession CSession DExit AExit BExit CExit D1234
Fig. 01One window, many browsersFour Accounts in one window. Each is a browser of its own, sealed from the next, with its own device and its own exit.
  1. 1Session. Its own cookies, storage and cache.
  2. 2Seal. Nothing crosses, in or out.
  3. 3Device. One machine it presents as, whole.
  4. 4Exit. Its own IP, from its own proxy.
How it works

Add an Account. Give it an exit. Open it.

Name it and give it a proxy; Umbra builds a device to match, and it opens in a Session of its own.

1New AccountNameAcct 03|Group2Its exitYour machineThe internetAcct 03Exit C192.0.2.613Open itAcct 01Acct 02Acct 031New AccountNameAcct 03|Group2Its exitYour machineThe internetAcct 03Exit C192.0.2.613Open itAcct 01Acct 02Acct 03
Fig. 02Three stepsName a new Account, give it one of your proxies as its exit, and open it — a browser of its own, in the one window.
  1. 1Add an Account. Give it a name and a group; it gets a device of its own.
  2. 2Give it an exit. One of your proxies — the form offers one no other Account holds.
  3. 3Open it. It opens in the one window, a sealed browser of its own.
FeaturesEvery feature

One window. Everything it takes.

Ten parts, on one page.

Fingerprint

A site reads more than your cookies.

Screen, graphics, fonts, time zone and language: together they say which machine you are on. Umbra gives every Account one coherent device of its own, the same on every visit.

  • A computer, or an Android phoneChoose the kind; Umbra builds the rest to match its exit.
  • Noise of its ownA fresh canvas and audio seed for every Account.
  • A ScorecardIt checks that the device agrees with itself.
Acct 01Screen1920 × 1080FontsGraphicsBrowser buildTime zoneEurope/LondonLanguageen-GBFollows the exit203.0.113.24Scorecard13 of 13 agree
Fig. 04One device eachEvery Account presents one coherent device of its own, the same on every visit. Its time zone follows its exit; its language, where it can.
Yours

Kept on your machine.

Your Accounts, their sign-ins and your proxies live on your computer. Turn on Sync and what it carries is sealed here, with a key made from your passphrase, before it leaves. Umbra sells no proxies.

  • Sealed before it leavesOn this machine, with a key made from your passphrase.
  • A copy each dayThe last seven kept.
  • No back doorWithout your passphrase, the only way in is to guess it.
PushPullThis machineOur serverstores sealed bytesA new machineKey from your passphrasestays on each machineA copy each day, seven kept
Fig. 12Yours, and portableYour Accounts are sealed on this machine with a key made from your passphrase, and our server stores them sealed. A copy is kept here each day.
Members

The guide and the changelog.

Both are for members. Sign in with your Umbra account to read how every part works, and what has changed.

Sign inCreate an account

PricingHow paying works

Two plans. No Account limits.

Bring your own proxies. A one-day free trial in the app first, no card needed.

A card plan renews monthly and cancels any time; paying in USDC buys a fixed 30-day term. Within 14 days of a charge, a full refund with no reason needed.

Solo

One person, one machine.

$19.99/mo

  • Unlimited Accounts
  • One computer
  • Proxies, site helpers and routines
  • A coherent device per Account, and the Scorecard
  • Backup sealed with a passphrase you hold
Start with Solo

Team

Five people, sharing Accounts.

$49.99/mo

  • Everything in Solo
  • Five computers and five people
  • Shared Accounts across the team
  • A live board of everyone’s Sessions, and roles that hold
  • The board’s relay runs free on your own computer: Umbra starts it, Tailscale (free) gives it its address
Start with Team
QuestionsAsk us something else

Common questions.

Plain answers to what people ask before they download.

What is Umbra?
A browser for Windows that runs many Accounts at once, in one window. Each Account opens in a Session of its own, with its own cookies and storage, its own device and, given a proxy, its own exit.
Do I need my own proxies?
Yes. Umbra sells none: bring your own, and each Account gets an exit of its own. A dead exit is never swapped for your own connection.
Does Umbra act on its own?
Only where you let it: a routine you built, a watch you set, and the ready-made page helpers — on until you switch them off — which decline paid add-ons, tick a required terms box and accept a cookie banner. Nothing Umbra ships presses anything that spends money.
How does the free trial work?
Install Umbra and the trial runs in the app for one day. No card is needed to start it.
Where is my data kept?
On your machine. If you turn on Sync, your Accounts and proxies are sealed there, with a key made from your passphrase, before they leave.
Can I cancel any time?
Yes. A card plan renews monthly and cancels any time; paying in USDC buys a fixed 30-day term.

One window. Every Account.

Install Umbra, add a proxy, open your first Account. A one-day free trial in the app, no card needed.

Download Umbraor see every feature