Give windows and browser tabs stable letter addresses, then type one to switch directly. Search by title or URL when you don't know the address. Pin letters to favorite apps, including apps that aren't running. Free and open source for Apple silicon, macOS 15+.
I'm the maker of Tabnax. I built it for switching between specific windows and browser tabs from the keyboard. Their letter addresses stay attached while the targets are open; fixed app letters can persist across restarts.
It needs Accessibility permission. Chrome, Arc, Edge and Brave tabs need Automation approval; other browsers require companion setup. The current release is self-signed and isn't Apple-notarized, so check the installation notes first.
The gallery shows native views with sample data. Source and installation instructions are at the linked GitHub repository.