Which Is A Better Browser: Opera or Mozilla Firefox?

Opera
Opera
57%
votes

(4) google+

Google+
Opera is a web browser for Windows, macOS, and Linux operating systems developed by Opera Software. It uses the Blink layout engine. An earlier version using the Presto layout engine is still available, and runs on FreeBSD systems. Features of the Opera web browser include private browsing, tabbed browsing, download manager, mouse gestures and browser extensions. [source]
VS
Mozilla Firefox
Mozilla Firefox
43%
votes

(2) google+

Google+
Mozilla Firefox is a free and open-source web browser developed by Mozilla Foundation and its subsidiary, Mozilla Corporation. Firefox is available for Windows, macOS and Linux operating systems. Its sibling, Firefox for Android, is available for Android. Firefox uses the Gecko layout engine to render web pages, which implements current and anticipated web standards. [source]