The project
Why Umbral exists and what wider distribution still requires.
The idea
Umbral aims to combine a considered visual experience with practical privacy and user control. It is Martin’s independent project built on Zen and Mozilla’s work, not an engine built from scratch.
What we prioritize
Reduce clutter, separate contexts with containers, protect from the start, and keep tools such as AI optional. Avoid adding features at the cost of reproducibility, data clarity or the ability to maintain the browser.
Next stage, without promised dates
Priority: maintaining the base and reliably delivering fixes for Linux with Flatpak. Windows is offered as an experimental ZIP with manual updates. Production signing and updates, accessibility, connection auditing and evaluating Flathub also remain pending.
Credits and licenses
The browser retains MPL-2.0 and component notices. uBlock Origin is redistributed original and signed, with GPL-3.0-only and attribution to Raymond Hill and contributors. Mozilla, Firefox and Zen marks belong to their owners. Umbral is not presented as their official product.