Keyboard query based window switcher

[chombee]

Does anyone know of a window switcher that works like this? Gnome Do has
a plugin that does it, but only the basics, I think deskbar may have a
plugin for it too, but a dedicated window switcher would be better.

* Press a hot key to summon the window switcher.
* A window pops up containing a list of all open windows. For each
window it could show the application icon and name and the window title,
maybe even a thumbnail of the window. The window has a query bar at the
top that is automatically focused when you summon it.
* Begin typing a query, and all the windows that don't match your query
are filtered out, while the nearest match is highlighted.
* You can also use the up and down arrows to move the highlight.
* Press return to close the window switcher and go to the selected
window.

Queries should match anywhere in the text not just from the start
onwards, it should work like it does in Gnome Do.

I got the idea from text editors, Scribes has a document switcher window
that allows you to switch between currently opened documents in scribes
in a similar way, but it's restricted to that application only. Gedit
has a plugin for opening new files that is similar too, and I think
that's based on TextMate for the mac.

Seems like a nice, scalable way to quickly find a window and switch to
it. I find that the Gnome panel's window list is not really scalable,
once you have a lot of windows you can't even read the name of each, and
you have to use the mouse to select a window anyway. Alt-tab is great
for switching between two or three windows lots of times, but this query
based search and filter would be better for finding a window when you
have lots of windows open and don't know where the one you want is, so I
think it'd be a good complement to alt-tab. And since it gives you a
list of all open windows, you could get rid of the window list on the
panel and just use it.