Mac Planet blogger Mark Webster said the Apple founder breathed new life into the company when he returned to it in 1996.
"He completely put Apple back on the map with the iMac. He's got a singularity of vision that most people in the industry just don't have."
Technology commentator Ben Gracewood said Jobs was a driving force in Apple's "ruthless excellence in design".
"People would say that he would be the guy people would go to and he'd turn them away and say 'not good enough, come back when it's better'."
This helped Apple become the " absolute, undisputed leader in terms of look, feel and behaviour of devices".
Griffin said Apple would not be the same company without Jobs. "There are lots of really smart people at Apple, but there doesn't appear to be anyone with the vision and the manic drive that [Jobs] has to lead the company."