Linux and macOS users, fret not, you already enjoy a Firefox that’s optimized for 64-bit. Also, with the jump from 32 to 64 bits, a security feature called Address Space Layout Randomization (ASLR) works better to protect you from attackers. Here’s the key thing to know: 64-bit applications can access more memory and are less likely to crash than 32-bit applications. What’s the difference between 32-bit and 64-bit? How much less? In our tests so far, 64-bit Firefox reduced crashes by 39% on machines with 4GB of RAM or more. That means you get a more secure version of Firefox, one that also crashes a whole lot less. Users on 64-bit Windows who download Firefox can get our 64-bit version by default. Available now on Windows, Mac, Linux, Android and iOS. Get Firefox, a free web browser backed by Mozilla, a non-profit dedicated to internet health and privacy. Firefox Mac OS X 10.9, 10.10 and 10.11 users move to Extended Support Release Firefox 78 is the last supported version for Mac. Firefox is safe to install and use, so choose 'install anyway'. Learn more about Firefox products that handle your data with respect and are built for privacy anywhere you go online.
