Microsoft’s Internet Explorer is the unloved, grudgingly acknowledged pain in web designers’ necks everywhere, mainly because of its slow support for CSS standards. Yet it was the first to offer support for @font-face (way back in 1998, but limited to their own EOT format) while the most recent version, IE10, is leading the way in typographic sophistication by allowing full OpenType features.
Global Market share: 27.6% (September 2012)
Font formats: .eot (embedded OpenType) and .woff (since IE9)
Notes: IE won’t accept a font that includes a format string in the src descriptor. For example src: url("GraublauWeb.eot") format("embedded-opentype"); does not work.
Latest version: Internet Explorer 10
Release: February 2012
OS: Windows 7+
Global Market share: Not known
Notes: The big news for typophiles is the adoption of CSS3 font-feature-settings property, allowing for advanced OpenType feature control.
Internet Explorer 9
Release: March 2011
OS: Windows Vista, Windows 7, Windows Server 2008 R2
Global Market Share: 12.51% (September 2012)
Notes: IE9 added the WOFF font format and full CSS3 fonts module support.
Internet Explorer 8
Release: March 2009
OS: Windows Vista, Windows 7, Windows Server 2008
Global Market Share: 9.98% (September 2012)
Internet Explorer 7
Release: October 2006
OS: Windows XP+
Global Market share: 4.4% (September 2012)
Internet Explorer 6
The cause of most developers’ angst, IE6, is almost finally out of the reckoning, no longer actively supported by Microsoft, and with a market share of less than 1% users nowadays are largely found in China, or might be corporate users stuck with Windows 2000 by company policy.
Stats via W3CounterBack...