[OJFord]

Firefox was released 20 years ago, in 2004.

30 years ago in 1994 you could have been using Linux (v0.99/1.0/1.1), Apple System 7 (not OSX), and Windows (3.2) - but not with Firefox.

You might have used Lynx or NCSA Mosaic, or by the end of 1994 Mosaic Netscape (later Netscape Navigator) or beta Opera.

[jobigoud]

I think they were listing the lineage of browsers they used, starting from the earliest one to current one. Not that they were using Firefox 30 years ago.