Browser
Cobalt
Desktop-class extensions, back on Android.
A revival of Kiwi Browser on Chromium 140: Kiwi’s patches carried onto current Chromium, and a new Android shell written in Kotlin and Compose. MV2 and MV3 extensions run side by side, and uBlock Origin comes preinstalled.
- Version
- 0.4.3
- Licence
- GPL-3.0
- Runs on
- Android 10+
- Origin
- Revived from Kiwi Browser (Chromium)
See it in action.
New tab 
Toolbar at the bottom 
Extensions, uBlock Origin on 
Tab switcher 
The lock and its certificate 
Theme editor 
Solarized Light 
PDFs in pdf.js
What makes it different.
uBlock Origin, built in
uBlock Origin installs on first run and compiles 176,450 network filters. It can be disabled but not uninstalled, and Cobalt will not drop Manifest V2.
Security fixes you can check
Cobalt stays on Chromium 140 and backports fixes from current stable, 45 so far. Every CVE is listed with its upstream commit, or with the reason it was left out.
Google Play Services on the way out
Removing Play Services is a release gate. Anyone can measure progress from the shipped APK: 14 modules left, down from 18.
A user agent that tells the truth
Cobalt reports the Chromium version it is built from. WebXR, WebUSB and Web NFC are off, and Web Bluetooth asks before use.
Built with.
- Chromium 140
- Kotlin
- Jetpack Compose
- GN / Ninja