Firefox is a free Web browser created by Mozilla. It is notable for being completely open-source, meaning that anyone can obtain the source code and make their own version (like Orfoxmore
When you're typing an Internet address or search query into the address bar, Chrome has optional tools that can automatically kick in to help you reach your destination more quickly. It can redirect you when you mistype a URL, suggest websites or searches as you type, and partially preload websites in the background with a prediction service. There's also Touch to Search, where mobile users can tap on a word on a webpage to search Google for that term.
A snoop-free browsing experience can be difficult to achieve, but apps like the Tor Browser make it possible. The browser is a modified form of Firefox with built-in support for the Tor network. This is a network of encrypting relays between you and the Internet that makes it difficult for nosy people to intercept your private online communications or record your whereabouts. The Tor Browser works similarly to a VPN, but it's more decentralized, and it's free. The Android version is called Orfox and is used in combination with the Orbot app to connect to the Tor network. iOS doesn't have an official Tor option, but there are third-party Tor-aware browsers such as Art Fusion's VPN Browser.
Since Opera is basically Chrome's fraternal twin, if it wants to compete with Chrome, it has to be better, and that's a hard act to follow. However, Opera's benefit to battery life is one point in its favor -- Chrome has a reputation for inefficient battery use. And some users will appreciate the video pop-out. Since you can get all the major Chrome extensions without much fuss, it's hard to make a case against Opera. It's definitely a worthy Web browser in its own right and might make Google reconsider some of its decisions on Chrome.