Bromure Web runs every browsing session in a disposable virtual machine on your Mac. Version 5 keeps that promise and changes two things you will notice right away: how fast the browser draws, and how you move between your profiles.

A GPU for the browser

Until now, the Linux machine your browser runs in had no GPU, so Chromium drew every page, every WebGL scene and every scrolled layer in software on the CPU.

On macOS 27, Bromure Web 5 gives each browser VM a GPU backed by Metal, running on your Mac's own graphics hardware:

Graphics-heavy pages keep up. Maps, charts, 3D viewers and other WebGL pages ran 8.1x to 52.1x faster in our tests than on the old software path.
Scrolling and animation run on the GPU, where before every layer was drawn in software.
The pointer is the real macOS cursor.

Each browser VM gets its own sandboxed renderer, and the page itself never leaves the VM. The Metal renderer is on by default and can be turned off per profile under Performance. On macOS 26 and earlier, Bromure Web keeps rendering in software as before.

How the new renderer works, and what our benchmarks do and do not show →

Profiles, Safari-style

Your profiles now live in a profile menu in the tab bar, the way they do in Safari. From there you can switch to another profile's window, and create, edit or delete profiles.

The separate launcher window is gone. Bromure opens straight into a browser window:

⌘N opens a window of the profile in front, and ⇧⌘N a private one.
File ▸ New Window With Profile lists every profile.
Settings ▸ General ▸ Open New Windows With picks which profile opens at launch and on ⌘N. It defaults to the last one you used, and the profile menu can set it too.

A redesigned setup

Installing or refreshing the browser image now shows where it is: a rail walks through Download → Install → Personalize → Launch beside a large progress readout, with the details folded away until you want them. The wording explains why the image is being installed, whether that is a first run, a monthly refresh or an update.

Scrolling that follows your fingers

Trackpad scrolling now reaches Chromium as exact pixel deltas, applied one to one, instead of being turned into mouse-wheel ticks. Small movements are no longer dropped, and in our measurements the page starts moving in 15 to 30 ms, down from 65 to 90 ms.

Also in Bromure Web 5

Strict Site Isolation is now a per-profile setting, on by default. Turning it off trades some isolation between sites for far fewer renderer processes: an ad-heavy page went from 70 processes and 2.1 GB to 5 processes and 1.4 GB.
On macOS 26, the prewarmed VM no longer holds on to its full memory allocation while it waits.

Bromure Web 5 is free and open source, on Apple Silicon. Get it from the downloads page, or learn more on the Bromure Web page →.