Tetherfy(WiFi Tether w/o Root)By Zigyu Apps ( Free )
Turns your Android phone into a free WiFi Hotspot - no rooting or tether plan required.MIGHT NOT be compatible with HTC myTouch 3G Slide, DROID RAZR, Droid 2, Droid X, Bravo, HTC Thunderbolt, EVO 4G, ...