Net Market Share After a couple of months that saw Windows 8.x stop growing and even lose some usage share, August was quite a turnaround. Both Microsoft's operating system and its browser saw usage increase. Firefox, which has been on a downward spiral for almost a year now, also had a good month, picking up a few points. Net Market Share Net Market Share Internet Explorer was up 0.45 points, Firefox gained 0.15 points, and Safari's presence also grew, up 0.16 points.