As one of the best proxy softwares, Ultrasurf is very easy to use without any installation.
The following will show you how to use it in 3 steps:
1. Download Ultrasurf
Open the Ultrasurf.us site, and click on the "FREE DOWNLOAD" button on the right top, then you can download the Ultrasurf client as a ZIP file.
In case the Ultrasurf.us site is blocked in your area (such as China), you can use some other proxies, SSH tunnels or VPN services to unblock it.
2. Run Ultrasurf
After download, extract the ZIP file, then you can get an EXE file, open which, you can run Ultrasurf directly.
In case you come across with a Windows Security Alert, such as what you can see from the following image:
Just click on the "Allow access" button, then you can see an IE new tab of Wujie, which is the Chinese version of Ultrasurf, and you can unblock any blocked sites right away.
3. Set browser network proxy
On IE, you can use the Ultrasurf proxy service directly after connection, but on Chrome, Firefox, Safari or any other browser, you also need to set the network proxy to "127.0.0.1 : 9666".
Take Firefox for example, you can find the proxy settings page via the following path:
Preference –> Advanced –> Network –> Settings
Then select "Manual proxy configuration" to enter "127.0.0.1" & "9666" on the HTTP Proxy column, check the "Use this proxy server for all protocols" box, and click the "OK" button to save the change, as what you can see from the following image:
Instead to set the network proxy settings manually as mentioned above, you can also check out SwitchySharp and FoxyProxy to set them automatically.
After that, you can bypass internet censorship, encrypt online communications, and hide your IP on non-IE browsers, too.