MathML history

1993-1995	<MATH> Arena	HTML
1998-1999	MathML Gecko	MathML 1
2002-2003	Mozilla 1.0	MathML 2
2006-2007	MathML Opera 9.5	OpenType MATH
2008	HTML5 Firefox 3.x	HTML5
2009-2011	MathML WebKit	MathML 3
2012-2013	MathML Chrome 24	Blink Chrome 28
2014	OpenType WebKit/Gecko	MathML 3 2nd Edition
2015-2016	MathML WebKit	Implementation Note for MathML
2019-	MathML Chromium	MathML Core & MathML 4

Important milestones:

• First MathML specification and starting Gecko's implementation (1998-1999)
• Microsoft designed OpenType MATH table for Word (2007)
• HTML5 specification with MathML support (2008)
• Rewriting WebKit's implemetation (2016)
• MathML Core specification and Blink's implementation (2019)