American web analytics firm, Janco Associates, reckons market share of Microsoft’s Internet Explorer has dropped to 63.86% globally – from a high in January 2005 of 86.97%. The biggest winner is Firefox, which Janco says now accounts for 17.4% of the browser market.

But that, as Janco notes, is globally. Other sources (noted here) suggest Firefox’ average penetration into European markets, for example, at around 25% and Asian markets even higher. Whichever way you slice it, Microsoft continues to lose ground in the battle for browser hearts and minds. Find Janco’s latest paper here.