Hi. :)
There's multiple browsers you can user and others are specifically optimized for an operating system, such as Microsoft Edge by Microsoft, or Safari by Apple. Both are stock applications that come in the latest computers of both companies.
User experience/interface. In my opinion, I prefer Google Chrome to be my first choice of browser, as it's already optimized for both, Windows and Mac OS. It gives a sleek, yet simultaneously fast response times and quality search information, and offers free mobile compatibility and Gmail syncing.
Here are some of my top, and popular web browsers that are the latest, and the features:
Chrome: SPDY
When the HTTP protocol was designed, Web pages consisted of text and a few images. Today's Web pages come packed with dozens of style sheets, JavaScript files, and an untold number of images. HTTP forces browsers to request each item individually, adding to the overhead.
Enter SPDY, an entirely new protocol Google has created to fight this sluggishness. Not many websites speak SPDY yet, but Google claims those that do can deliver their information about twice as quickly. Chrome is the only browser currently working with SPDY-enabled websites, many of which happen to sit in Google server farms.
Firefox: Deep extensions
All of the major browsers have plug-in architectures, but only Firefox offers a deep, sophisticated API. While other browsers allow you to write plug-ins in JavaScript, CSS, and HTML, essentially creating a Web page that wraps around the Web page, Firefox goes one level deeper, giving you access to an API that allows you to build full desktop applications out of browser parts. This is largely an accident of history because Firefox was one of the first with extensions, and the other browsers that came along afterward decided the world didn't need these extra features.
FireFTP, for instance, is one of the deeper extensions that's hard to spin up from the classic three languages: HTML, CSS, and JavaScript. It takes advantage of the access to the file system and the low-level access to the TCP/IP stack. Some people may feel the thinner APIs from the other browsers act like a better sandbox and thus offer more security -- and they're right. But many of the most sophisticated extensions for Firefox require the flexibility of dipping into native code
Internet Explorer 9: Emphasis on energy efficiency
Everyone may be talking about JavaScript compilation engines and hardware integration, but the idea of measuring browser energy consumption is a new one. Here, Microsoft is leading the way, claiming that IE9 is the most energy-efficient browser.
Safari 5: Easy user agent alterations
Every page request includes the name of the browser, which in this context is called the "user agent." If you want to pretend you're using a different browser, all you need to do is change this string. This can be particularly helpful when testing mobile software that must appear differently on the small screen of a smartphone.
The user agent string can always be changed by digging deep into the files on your desktop. Chrome lets you change it with a command-line parameter. Safari, however, simplified alteration of your user agent by providing a submenu that offers a wide range of user agent strings, including those for the various iPads and iPhones. In the process, Safari transforms into the ideal platform for testing iPhone- or iPad-tuned websites or for anyone who likes the simplicity of a mobile Web page in a desktop environment.