Datum en versienummer Gecko lay-out engine in Mozilla, Firefox en Netscape Navigator
Mozilla		Firefox		Netscape Navigator
				6.0	20001108 - m18
				6.1	20010726 - 0.9.2
				6.2	20011019 - 0.9.4
1.0	20020530 - 1.0
				7.0	20020823 - 1.0.1
1.4	20030624 - 1.4			7.1	20030624 - 1.4
1.7	20040616 - 1.7
				7.2	20040804 - 1.7.2
		1.0	20041107 - 1.7.5	8.0	20050512 - 1.7.5
				8.1	20060111 - 1.7.5
		1.5	20051111 - 1.8
		2.0	20061010 - 1.8.1	9.0	20071015 - 1.8.1
		3.0	20080529 - 1.9
		3.5	20090624 - 1.9.1
		3.6	20100115 - 1.9.2