Pick the browser for every link. Right under your pointer.

Click a link in Mail, Slack or a terminal and a small picker opens right under the cursor. No window to hunt for.

Tick Remember once and that site always goes to the browser you chose. With subdomains on, a rule on github.com also covers gist.github.com. The longest match wins.

Pick a browser by number, take the first one with Return, copy the link, or cancel.

Hold Shift while you pick. Browsers that can open a private window do; Safari has no flag for it, so it stays a normal window.

Hold Option while clicking a link to see the picker even when a rule matches.

A menu bar item, no Dock icon. Open at Login if you want it always there, and restore your old default browser in one click.