Pufym is here to protect you on the internet - it is a web proxy that filters all of your traffic and hides your IP address from the websites that you visit trough it. Pufym is not serving as antivirus or firewall, it is simply tunneling your traffic - your computer is accessing the websites from Pufym.com. Pufym is simple to use, and have a very important feature - SSL encryption. Your traffic in and out is encrypted with SSL protocol.
Way of work
Imagine that you have a gloves on your hands and want to touch an object - it's the same way with the website, the proxy is your internet "glove" that will protect your internet identity. Your request for a web page is parsed from Pufym.com, then it requests the data from the website that you'd like to see, and finally the information is sent back to you.
The alternative methods for proxying a web page are many - from other scripts (like CGIProxy and PHProxy) to a completely different systems (like SOCKS connection protocol). If you need tunneling for your whole network, you need a VPN.