NetSonic for Windows is an Internet connection accelerator, which significantly reduces the waiting time while it loads the pages you're visiting in your favourite browser.
You can use NetSonic with any of the following browsers: Netscape, Internet Explorer, Opera, among others.
What NetSonic does is store certain elements of the webpages in the special NetSonic cache, much more effective than the standard cache of most browsers, in place of having to wait for each page you visit to load. With NetSonic it will load instantly and you will see if the page has suffered any changes since the last time you visited it.