Tarnel is an open-source browser built around Spaces: isolated partitions with their own cookies, fingerprint and passwords. The rest stays out of your way.
Pick a Space colour. The whole page follows.
Privacy, built in
A built-in content blocker, fingerprint protection that reaches into workers, and cookie banners rejected for you. All on by default, all on your device.
Requests blocked· this demo
0Fingerprint protection, workers included
Each Space presents its own consistent fingerprint, and the protection runs inside dedicated and shared workers before their first line of code.
Cookie banners, rejected
Consent popups are answered with the most private choice automatically. Rules ship with the app, nothing is fetched or reported.
A privacy report you can read
See what was blocked, per site and per Space, without sending a single number anywhere.
Workflow
On-device translation
Tarnel translates with Bergamot, running locally. The model runs on your machine, so no text ever leaves your device.
Dieser Text bleibt auf deinem Gerät und wird nirgendwohin gesendet.
Performance
Features load lazily and cost nothing while they are off. Background tabs fall asleep and give their memory back, then wake exactly where you left them.
- Memory saver puts idle tabs to sleep
- No idle timers or animations in the chrome
- One network dispatcher per session, zero cost with no rules
Memory saver
- GitHub - electron/electron
- JavaScript | MDN
- YouTube
- Linear – Inbox
- Figma: Tarnel landing
- Hacker News
Illustration. Bars show relative memory, not measurements.
Everything else
Features that usually take five extensions, built into the browser and off the hot path until you use them.
Command palette
Tabs, history, Spaces, settings and actions behind one shortcut.
Password manager
Built in, per Space, encrypted with the OS keychain.
Content blocker
Built in at the network level. Ads and trackers never load.
Extensions
Install from the Chrome Web Store. uBlock Origin Lite runs via declarativeNetRequest.
Import
Bookmarks, history and passwords from Chrome, Edge, Brave or Firefox.
End-to-end encrypted sync
Encrypted before it leaves the device, synced through a folder or WebDAV server you choose. No Tarnel server.
The real thing
Open source
Read every line. Change any of them.
Tarnel is MIT licensed and built in the open on GitHub. Issues, pull requests and forks are welcome.
$ npm install
$ npm run dev
Partners
MantelVPN
Private VPN by MantelVPN, built to pair with Tarnel.
Free and open source. For Windows, macOS, Linux and Android. v0.9.1