On Windows XP.

Opera supported win 2000 until 2010s. Same for Firefox which had tabs in its version 1.0 in 2004.

Might be, however the comment I replied to implied any browser on Windows 2000.

And? I never said Opera invented tabs (I knew they didn't).

	▲	pjmlp a day ago \| parent [-]
		And it wasn't on Windows 2000 heyday.