Janco Associates‘ latest report on the state of the browser market makes interesting reading. The company’s press release is rather blunt: Microsoft Flops and Loses Another 7% of its Browser Market Share in 12 Months...

What Janco doesn’t show in the press release is the detail (that’s only available in the full report). One table, in particular, is illuminating. In April this year, Janco had Internet Explorer at 65.40%. Now, five months later the company says that market share has dropped to 58.50%. If that decline is sustained it’s entirely possible that Microsoft will drop below 50% in January or February next year.

Also in this report is Janco’s assessment of the Windows Vista failure. The press release headline continues: … Vista Still only used by less than 15% of all users. The full report features another interesting table, one that charts Vista market share against other versions of Windows as well as Microsoft’s total share of the desktop OS market since launch. It shows that not only is Microsoft having trouble converting existing customers but it is also losing some of those customers to the competition: in the time it has taken to get that 15% market share, Microsoft’s overall desktop OS share has dropped by more than 4% – from 96.32% to 92.20%.

And, the data don’t take into account the unwanted licences said to be boosting Vista numbers. This analysis also can’t calculte the possible lack of confidence that will be caused by Vista’s security having been shown to even more useless. If I could afford to be a Microsoft shareholder I’d be thinking about selling round about now.