Better Web browser integration
Previous FrontPage versions were often criticized as being "IE editors" rather than true Web editors. There was some truth to this, though previous versions offered at least lip service support of non-IE browsers like Netscape. Starting with FrontPage 2003, however, non-IE browser support has been enhanced dramatically, and since I like to work primarily with Mozilla-based browsers, and then test sites for compatibility in IE and other browsers after the fact, this change is most welcome.
At its simplest level, FrontPage 2003 lets you set your default browser without going through a dialog box. Frankly, I don't understand why it doesn't pick up your default browser setting from the OS, but the new Preview drop-down (figure) does at least give you options for all of your installed browsers, even if IE is first. When you choose "Default browser for HTML files," that does become the default in FrontPage, which I appreciate. You can also simultaneously preview in multiple browsers, check various resolutions, and edit your list of acceptable browsers. Good stuff.