Strangely, Mozilla has introduced a new version of Firefox so soon after Firefox 4.0 was released considering how long the 3.x branch was going on. While the reasons why Mozilla Firefox has released version 5.0 so soon after the release of 4.0, we're going to take a guess that it had to do with the Do-Not-Track header, a privacy feature long awaited in a mainstream browser.
Additionally, there are several security issues which have been addressed in jumping so far ahead in versioning.
This download is licensed as freeware for the Windows (32-bit and 64-bit) operating system on a laptop or desktop PC from internet browsers without restrictions. Firefox 5 5.0.1 is available to all software users as a free download for Windows 10 PCs but also without a hitch on Windows 7 and Windows 8.
Compatibility with this software may vary, but will generally run fine under Microsoft Windows 10, Windows 8, Windows 8.1, Windows 7, Windows Vista and Windows XP on either a 32-bit or 64-bit setup. A separate x64 version may be available from Mozilla.
We have tested Firefox 5 5.0.1 against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.