Does anyone know if there will be any episode26+
of air gear??
And!! does anyone know any anime similar to air gear??

No, there won't be any more anime for air gear. What's out is out.

Tenjou Tenge would probably be your closest to Air Gear and that's only because it's the same mangaka, Oh! Great.

I already have a thread up on Air Gear as it is.

http://www.totse.com/community/showthread.php?t=2106885

The manga is still going, and if you're truly a fan you'll read it.