A Pointless Pondering

At dinner the other night, it occurred to me...every ketchup (or catsup, whichever spelling you prefer) bottle I've ever seen has read "[insert brand name here] Tomato Ketchup." Which got me thinking...is there any other kind of ketchup besides tomato? I suppose it's theoretically possible to subject any number of fruits and vegetables to the ketchuping process, but I've never heard of it being done...