In Pictures: Android tethering apps, 6 excellent o...
WiFi Tether for Root Users
Another option for users with rooted devices is the aptly named WiFi Tether for Root Users. The free app offers the same basic functionality as Barnacle -- and it includes a home screen widget. WiFi Tether for Root Users has numerous advanced options, including an automatic shutdown timer that can disable your phone's Wi-Fi hotspot after a certain amount of time, inactivity or data usage has been reached.
In Pictures: Android tethering apps, 6 excellent options