NetworkManager - NetworkManager is a set of co-operative tools that make networking simple and straightforward.
Connectify Hotspot - Connectify Me hotspot is a PC app that turns your computer into a Wi-Fi hotspot.
wicd - Wicd is an open source wired and wireless network manager for Linux.
Virtual Router Plus - Download Virtual Router Plus Windows Wifi Hotspot for free.
iw - iw is a new nl80211 based CLI configuration utility for wireless devices.
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.