Hi,
yes, there are one cam for sure you don't need to remove ir-filter to make it good working for Freetrack: I got the Logitech QuickCam Pro 5000. It works good with any IR-LEDs;
But as far as I know, it isn't available no more. (And it was quit expensive).
Others,(that I personally don't know) are:
http://forum.free-track.net/index.php?showtopic=39&message=1383
http://forum.free-track.net/index.php?showtopic=39&message=4159
http://forum.free-track.net/index.php?showtopic=39&message=5893
...
In any case you need to add a ir-pass-filter to use it under every light conditions.