IntelNav is an Internet Explorer add-on which offers a set of back / forward buttons with improved functionality.
The main improvement is that recently visited pages are not lost from the lists of the 2 buttons.
Currently in IE, Firefox, Mozilla and as far as we know all other existing browsers, navigating to a new page (by selecting a link from within a page or by typing the URL in the address bar) empties the list under the forward button. As a result, these pages cannot be found any more in the 2 lists, except if they happened to be also in the one under the back button.
IntelNav keeps the pages in the forward list when visiting a new page, it just lets this list as it was before.
Another improvement is that the 2 lists display the URLs of the pages as well as their titles. We think sometimes this can be useful.