NetSpot - NetSpot is a free app for wireless site surveys, Wi-Fi analysis, and troubleshooting
mHotspot - mHotspot is a completely free software which converts your windows 7 & 8 laptop into a virtual wifi router and creates a secure wifi 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.
Wifi Analyzer - Wifi Analyzer is a handy tool which helps you to select a better channel for your wireless router.
Maryfi - Maryfi is a software program designed for laptops to start their own wireless hotspots.