Contributor

adepto

(a person who backs, supports or champions a cause, activity or institution)

ano

(a person who backs, supports or champions a cause, activity or institution)

apoganto

(a person who backs, supports or champions a cause, activity or institution)

kontribuanto

(a person or thing instrumental in the creation or growth of something)

kunlaboranto

(a person who contributes articles to a newspaper, magazine etc)

subtenanto

(a benefactor; someone who gives to charity or some cause)