Homedale - With Homedale you can search for Wi-Fi / WLAN Access Points and monitor their signal strength.
Connectify Hotspot - Connectify Me hotspot is a PC app that turns your computer into a Wi-Fi hotspot.
Vistumbler - Vistumbler is a wireless network scanner for Windows Vista and Windows 7. Features:
Virtual Router Plus - Download Virtual Router Plus Windows Wifi Hotspot for free.
iBwave Wi-Fi - iBwave Wi-Fi software suite brings smart networking solutions to enterprise, education, hospitality, transportation, retail, office, healthcare, public venues, and residential wireless networks.
Baidu WiFi Hotspot - Turn your PC into a hotspot for mobile devices.