The most popular, most used browser on the Mac is, and not subject to much argumentation, Apple’s own Safari. And what’s not to like? It’s clean, fast, works well, but is missing a few things found in other browsers.
Extensions. Add-on utilities that bring extra functionality. Safari has extensions, but not nearly as many as found on Google’s Chrome browser, or Mozilla’s Firefox browser. That situation is not likely to change soon, but in the meantime you can bask in these two Safari add-ons for fun, but not so much profit.
Block, And Ye Shall Not Receive
At the other end of the scale is a utility called Safari Workspaces which lets you rearrange windows into a number of user-defined workspaces on your Mac. Think Spaces, but for Safari. What it does is what many Mac users need done; reduce screen clutter.