Seamonkey has an interesting history, in that it is both older and younger than Firefox. Older, because originally it was built from Mozilla Suite code (for those of you that don’t know, Mozilla Application Suite is the parent of Firefox, and was originally built from the code of Netscape Navigator which was open-sourced in 1998). Seamonkey is also younger than Firefox in that Seamonkey’s first version, 1.0, was not released until 2006, 2 years after Firefox 1.0.
Read more at Muktware
