From http://www.w3schools.com (Copyright Refsnes Data)

XSLT Browsers

All major browsers have support for XML and XSLT.

Mozilla Firefox

Firefox supports XML, XSLT, and XPath from version 3.

Internet Explorer supports XML, XSLT, and XPath from version 6.

Internet Explorer 5 is NOT compatible with the official W3C XSL Recommendation.

Chrome supports XML, XSLT, and XPath from version 1.

Opera supports XML, XSLT, and XPath from version 9. Opera 8 supports only XML + CSS.

Safari supports XML and XSLT from version 3.