Now multi-tasking with multiple tabs just got easier. As Quantum’s engine uses 30% less memory than Chrome browser, so your other programs can keep running at top speed. And the result of that is the new generation of Web discovery – a more intuitive and useful browser.įirefox 86 is a lean, mean browsing machine. As it is powered by a new Quantum engine, Firefox has doubled its speed. Mozilla Firefox 86 is a fast, secure and easy to use web browser.