publisher

noun3

1. •
   A person or (especially) a company who publishes, especially books.

   • All a publisher has to do is write cheques at intervals, while a lot of deserving and industrious chappies rally round and do the real work. — 1919
2. •
   A system or component that allows other components (subscribers) to receive notifications of something, such as an event.
3. •
   A preacher who is a Jehovah's Witness.