Ant0 Download

Browser engine

Ant0 Browser is the program that opens your profiles. How it is installed, verified and updated, and how to keep a profile on a specific release.

Updated Sep 7, 2026

What the engine is

Ant0 Browser is Chromium, the same base as Google Chrome, with Ant0’s changes compiled in. Every browser window a profile opens is an Ant0 Browser process. The app installs the engine on first run and keeps it current; you do not install it yourself.

The engine never contacts Ant0. It has no update checker, no telemetry and no account. The app does the downloading and the checking, and says so where it happens.

The Engine screen

  • Current release: the engine version profiles start with, the Chromium version inside it, and when it was published.
  • Update available: when a newer release exists, a banner offers to install it. Installing downloads the new release alongside the old one; nothing changes for running profiles until they restart.
  • Installed: every release on disk, its size, how many profiles are pinned to it, and Remove for releases no profile needs.

Downloads come from releases.ant0.link and are verified against a signing key embedded in the app before they are unpacked. A download that does not verify is discarded and reported.

Size and location

One release is about 510 MB unpacked. Releases live under the data folder (browsers/<version>), so moving the data folder in Settings → Data moves them too.

Pinning a version

By default a profile starts on the current release. To keep a profile on a specific version (for example while a site behaves differently on a newer Chromium), open its editor → Advanced → Browser version and pick a release. The Engine screen shows how many profiles are pinned to each release; a pinned release cannot be removed while a profile uses it.

Versions

Engine versions read 149.0.7827.114-ant0.1: the Chromium version, then Ant0’s build of it. Chromium’s own version stays visible on purpose; a browser that pretends to be a different version than it is would itself be a tell.

Command line

ant0 browsers ls                  # installed releases
ant0 browsers available           # what the stable channel serves
ant0 browsers install             # download and verify the current release
ant0 browsers default <version>   # the release unpinned profiles start with
ant0 browsers rm <version>