HotSpot Shield
This tool helps u to hide your ip from being visible when u're on the net.
Perfectly used during surfing using free wireless networks at your home, school, institute, anywhere.
Notes: It may slow-down ur surfing progress a bit for 1st-time users.
[UPDATED] - U may bypass websites restrictions by ur institute or office networks without using proxy softwares. Check the tutorial at http://slashaha.blogspot.com/2009/12/how-to-bypass-blocked-websites-by-your.html
CLICK HERE TO DOWNLOAD