I Want a software which is best and free work better and nice and also help ful to me .How can I change My IP address by proxy?ULTRASURF is a good one. Also TOR Vidalia bundle can help you!How can I change My IP address by proxy?to view websites from different IP's you could use a proxy site like http://www.hidemyass.com.
If you are talking about an app to change your ip for other reasons, I would recommend http://www.anonymizer.com, although it is not free.How can I change My IP address by proxy?There is considerable risk in using free proxies from unknown sources. Many of these free proxies are what are called hacker pots. They are there waiting for you to fall into their trap so they can steal your information and plant bots on your computer. Once a bot is planted the hacker has control of your machine and can steal credit cards, attack web sites and send out tons of spam all from your IP address.
Some of the free proxies/vpn's are run by people out to make money. There is nothing wrong with that in principle. However the best case here is that you will get a proxy loaded with advertisements with no real speed to it. The amount of money the owner can make with advertising clicks is really only pennies. Many of these owners supplement their income by key logging everything you do and selling your personal information to advertising companies. Since you have no way to know what the owner is actually doing you need to assume the worst case is true.
Read some more about free proxy servers below:
http://www.personalvpn.org/danger_proxy_
