The offer of browsers in Mac OS X is really extensive, since we have Firefox, Chrome, Safari, Opera and some others more minority, but there is one that has something that the rest do not have: Fake.
The key to Fake is that it is based on the Automator philosophy and works through AppleScript programming, so perhaps you have correctly intuited that what it allows us is to automate certain tasks such as filling in forms or clicking on linkeg.
What is this for? Well, obviously it is a tremendous asset to automate test tasks when we are developing a web page, for example, and above all, it is free ...
Download | Fake
I think it's the same as the Selenium IDE plugin does in Firefox.
http://seleniumhq.org/projects/ide/
At work I have used it from time to time. Not bad at all, although neither selenium, nor do I think that this Fake can automate authentication with a digital certificate (which is how we authenticate ourselves). But hey, for everything else it's fine.