Like Firefox? Try Thunderbird 3 Posted on December 10, 2009 by Jennifer Kavur 10 Dec 2009, ComputerWorld Canada Thunderbird 3 literally borrows the best ideas from Firefox and applies them to e-mail, says Mozilla Messaging CEO in a one-on-one with ComputerWorld Canada. What gives Mozilla’s free, open source and cross-platform e-mail application an edge over Outlook. Related