Hendrix was a good writter. Little wing, Castles Made of Sand come to mind.

But if you are talking about rock music.... Lennon and McCartney are the bomb. Much like Hendrix opened new doors on guitar playing , Lennon and McCartney opened the door on rock music being more that just another "I lost my girl and it sucks" pop song. Their use of modes in rock was also a big step. Everything after them is dirivitve, including Hendrix.