Web-browser, advanced e-mail, newsgroup and feed client, IRC chat, and HTML editing in one application. Itis built on the open source Mozilla Gecko engine, the same code which underlies Thunderbird and is the base for the Firefox browser.



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Comments about SeaMonkey as an Alternative to Thunderbird
apostolfaliagas
It has all of Thunderbird's features and many more.
Unfortunately doesn't support synchronization with CardDAV address books.

Some users think SeaMonkey is a great Thunderbird alternative, some don't.
- SeaMonkey is Free and Open Source
- SeaMonkey is Lightweight

SeaMonkey is both a WEB BROWSER and EMAIL CLIENT. It's the successor of Mozilla Application Suite or Netscape Communicator, resp. Further it includes also a news client program, an HTML editor (SeaMonkey Composer) and an IRC client (ChatZilla).