Key Developer Joe Hewitt Leaves Facebook

Joe Hewitt, one of the early developers of Firefox and the creator of the Facebook iPhone app, has left the company, he announced today on his blog. Hewitt said he hopes to create software tools to help developers and designers, such as Firebug, the debugging extension he created more than five years ago. Hewitt had in 2007 been part of Facebook’s first acquisition, Parakey, along with his co-founder Blake Ross, a director of product at Facebook, who is currently on leave. Other notable recent departures include Jonathan Heiliger and Jim Midgal.