Hotspotio!

PdaNet turns your smartphone into a true WiFi router for your computer (MAC or PC), and allows your laptop to go online wirelessly through the 3G network.

Win Hotspot is portable WiFi hotspot application has inbuilt WiFi Scanner to list Channel ,Signal % etc. It Also has bandwidth meter and WiFi Repair Tools.

Maryfi is a free and easy to use software router for Windows 7 computers. With Maryfi, users can wirelessly share any Internet connection: a cable modem, a cellular card, or even another Wi-Fi network. Other Wi-Fi enabled devices including laptops, smart phones, music players, and gaming systems can see and join your Maryfi hotspot just like any other Wi-Fi access point and are kept safe and secure by password-protected WPA2 Encryption.

Turn your phone to an open WiFi HotSpot.

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.

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. You will not be charged extra by your carrier, as all tethering data will appear to come from your phone itself.

Share your mobile connection via WiFi. Mobile Hotspot is a free alternative to Joikuspot - it turns your N900 into a wireless hotspot that can be used to access the Internet by other WiFi-enabled devices.

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.

Carrier-independent tethering for Android and BlackBerry smartphones. EasyTether supports Windows, Mac OS X, Linux computers and Android tablets. Works over USB and Bluetooth.

Share your Internet through Wi-Fi.