contributor

1. A benefactor; someone who donates to charity or some cause. · I am a longstanding financial contributor to Amnesty International.
2. A person who backs, supports or champions a cause, activity or institution. · He was a regular contributor to Greenpeace protests.
3. A person (or thing) instrumental in the creation or growth of something. · Methane is a major contributor to global warming
4. A person who produces articles published in a newspaper, magazine, online publication, etc. · William Safire has been a notable contributor to the op-ed pages of The New York Times for many years.

الجمع contributors