Nook

A fast, minimal browser with a sidebar-first design for macOS.

• Sidebar-first navigation – vertical tabs that feel natural and uncluttered.
• Performance – optimized with modern macOS APIs for speed and low memory use.
• Minimal, modern UI – focused on content, not chrome.

• macOS 15.5+
• Xcode (to build from source)

git clone https://github.com/nook-browser/Nook.git
cd Nook
open Nook.xcodeproj

Some obj-c libraries may not play nice with Intel Macs, though there should technically be full interoperability. You can use any number of resources to debug. You will also need to delete a couple lines of code for older versions of macOS than Tahoe (26.0).

You’ll need to set your personal Development Team in Signing to build locally.

Join our Discord to help with development: https://discord.gg/J3XfPvg7Fs

With the exception of third-party libraries in Nook/ThirdParty, all code is under the GPL 3.0 License. The relevant third-party code is licensed per-folder under a variety of free, open-source software licenses.