Contributor

(n.) One who gives or furnishes, in common with others, for a common purpose; as, a contributor to a book.

Thesaurus Entries

Maecenas, Santa Claus, almoner, almsgiver, angel, assignor, awarder, backer, bestower, cheerful giver, conferrer, consignor, donator, donor, fairy godmother, feoffor, financer, funder, giver, grantor, imparter, lady bountiful, patron, patroness, philanthropist, presenter, settler, subscriber, sugar daddy, supporter, testate, testator, testatrix, vouchsafer