Browser Fairy is described as 'One tool to rule them all'. There are more than 10 alternatives to Browser Fairy for a variety of platforms, including Mac, Windows, Linux, Microsoft Edge and Google Chrome. The best alternative is Choosy. It's not free, so if you're looking for a free alternative, you could try Browserosaurus or Browser Select. Other great apps like Browser Fairy are Account Surfer (Paid), Finicky (Free, Open Source), LinCastor Browser (Freemium) and Browser Tamer (Free).
Browserosaurus is an open-source (MIT license), Electron-based app for macOS. It works by setting itself as the default browser; any clicked links in non-browser apps are now sent to Browserosaurus where it’ll present you with a menu of all your installed browsers.
Browser Select is a utility to dynamically select the browser you want instead of just having one default for all links. similar to the prompt in android to choose a browser when a link in a non-browser app is clicked/touched.
A MacOS app for creating rules that decide which browser is opened for every link that would open the default browser. Open Facebook in one browser, and Trello in another. Or Spotify links in the Spotify client. Or whatever url in whatever app!.
When you click on a link, LinCastor Browser asks you to choose a browser to load the link with from a menu. Menu can contain a browser, an application but also AppleScript, shell script, Automator Workflow or even OS X share service.
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.