Ars Technica: Lightning Strikes Mozilla

“In contrast to web browsers, e-mail and calendar applications
have remained largely platform-centric. If you use Windows, chances
are you also run Outlook. If you’re on a Mac, you’re probably using
Mail.app or Entourage. Unix? PINE (just kidding). Although Mozilla
Thunderbird is a strong, cross-platform e-mail client, many users
have hesitated to drop their client of choice due to its lack of
support for calendaring, agendas, and to-do lists. Enter
Lightning.

“Lightning 0.1 is available for Windows, Mac OS X, and Linux as
an extension for Thunderbird…”

Complete
Story