The Mozilla developers have released Thunderbird, an open source, (free) replacement for Outlook Express which will run on Windows, Macintoshes, and Linux desktop computers. Those who use the Netscape Messenger eMail program will feel right at home. Screenshot
One possible misconception about the program; it is not a replacement for the full-blown Microsoft OutLook. It does not include a calendaring program, and it does not integrate with Microsoft Exchange. Thuderbird is an attractive modern replacment for OE. But wait! There’s more! Check out the feature list.