Amazon is offering Free Apps (Free App of the Day Bundle). If you have an Android, you can download them and give them a try.
Easy Tether, for example, shares your Android smartphone connection with your PC. If you have an unlimited dataplan for your phone, you do not need to subscribe to another service provider at home. You simply use the same data plan that you already use for your on-phone internet access by thethering with no additional tethering or broadband fees. The app costs normally $9.99 and is presently free.