How long has Steam been reporting Wine versions?

[RussianNeuroMancer]

About the list of installed applications:
So it is incomplete.

Since Steam detect WINE, I sure it may detect WINE Gecko too.

[mememe]

That doesn't necessarily mean that Steam cares about WINE Gecko. After all It's not really an application but more of a component, a replacement for the Windows Internet Explorer component. There is no need to look for Gecko anyway, since Wine has a special API for getting its version (wine_get_version in NTDLL.DLL), which seems to be a much more bulletproof thing to do - it's likely that Steam already uses that.

Unfortunately it's unclear whether Valve counts the OP's system as Windows XP 32-bit as it claims in the second line, or as Unknown.

[FutureSuture]

I see, so then it's default only for Ubuntu builds.
No. I mean if there is more "WINE Gecko" installations than 0.69%, then we able to see WINE Gecko in the list. But if we doesn't see WINE Gecko in the list, then there is less than 0.69% installations.

Ah, thank you for clarifying. No idea what WINE Gecko is as opposed to WINE, but I assume 0.69% is the threshold that Valve uses to either depict a program or not.

[ChrisXY]

Ah, thank you for clarifying. No idea what WINE Gecko is as opposed to WINE, but I assume 0.69% is the threshold that Valve uses to either depict a program or not.

Wine gecko is used for the "internet explorer" for wine, basically the engine from mozilla with a simple gui. I believe it is what you get when you run "wine iexplore" (yay 8.3).
http://wiki.winehq.org/Gecko

But if steam uses some webkit based browser now, doesn't it bring its own webkit libraries now and doesn't use internet explorer/wine gecko anymore?

[directhex]

But if steam uses some webkit based browser now, doesn't it bring its own webkit libraries now and doesn't use internet explorer/wine gecko anymore?

Steam ships with CEF, the Chromium Embedded Framework, for all its web browser doodads