Normally I work with Chrome a lot. But there are other browsers. Do those browsers work with Selenium too?
Each of the major browser vendors have provided a driver (similar to chromedriver) that allows Selenium to work with their respective browser.
Here is information on geckodriver. https://firefox-source-docs.mozilla.org/testing/geckodriver/#for-users
And here is where you can download it: https://github.com/mozilla/geckodriver/releases
Sadly this is more complex than it needs to be. It is heavily tied to your Selenium version so you will need to pick the driver based on that.
See here for the download: https://selenium-release.storage.googleapis.com/index.html
This one is easier than I thought as long as you are on a new Safari. You probably already have it! If you are on El Capitan or higher... just look here on disk /usr/bin/safaridriver.
See the releases on this page for the download: https://github.com/operasoftware/operachromiumdriver