Download OHarness

Free to use, no account needed. The desktop app bundles the browser frontend; the CLI gives you the same engine in a terminal.

DownloadmacOS (Apple silicon)

Latest buildOHarness-1.1.5-arm64.dmg

Apple silicon is the only build published — releases are cut on one Mac. On an Intel Mac, or anywhere else, the command line below is the same engine.

The browser frontend, driving the same engine as the terminal.

Or install from npm

$npm install -g oharness

Four commands: oharness for the terminal, oharness-web for the browser, plus headless and sync.

Requirements

The desktop app needs macOS 12 or later. The CLI runs anywhere Node 22.6 or newer does — Windows and Linux included.

After installing

Getting started Changelog Release notes Contact