Apps similar to iTether include TetherMe. It's paid, but Wireless Tether for Root Users is free. Other options are EasyTether and iPhoneModem. In total there are four Wi-Fi Hotspots like iTether for Android, iPhone, Mac, Windows and Linux.
TetherMe enables the native tethering feature on all jailbroken iPhones and 3G iPads, so that you can tether your 3G connection for free. It works by telling the iPhone to allow tethering on any APN that is used for iPhone data.
United States
Carrier-independent tethering for Android and BlackBerry smartphones. EasyTether supports Windows, Mac OS X, Linux computers and Android tablets. Works over USB and Bluetooth.
Russia
This program enables tethering (via wifi and bluetooth) for "rooted" Android phones. With Wireless Tether, your laptops and other devices can connect to your phone's 3G or 2G connection over WiFi.
iPhoneModem enables you to share the Internet connection of your iPhone with your Mac or PC. It's a small and simple application that anyone can use in a few seconds.
Germany
EU
