The Gospel of Buddha was an 1894 book by Paul Carus, it was modeled on the New Testament and told the story of Buddha through parables. It was an important tool in introducing Buddhism to the west and is used as a teaching tool by some Asian sects.
H.G. Wells in his Outline of History draws strong parallels between the essential message of both Buddha and Jesus main:love thy neignbor, and how that message was distorted by followers and the priesthood. Durant in his The Story of Philosophy suggests that Jesus-Buddha is the feminine ideology, Nieztche the masculine and plato-socrates somewhere in between.