Choosy - Choosy opens links in different browsers as specified, according to rules, set by the user.

Finicky - A MacOS app for creating rules that decide which browser is opened for every link that would open...

Hurl - Choose a Browser - A windows utility that lets you choose the browser on the click of a link

Browser Selector - Simple rules-based automatic browser selection based on URLs.

Browser Select - Browser Select is a utility to dynamically select the browser you want instead of just having one...

Braus - A small application to select a browser every time you click a link anywhere. This is especially useful if you have multiple browsers or profiles, and you want to be able to open certain links in certain browsers.