Jelli

Jelli is a San Mateo, California-based advertising technology firm, which develops solutions for the programmatic sale and airplay of radio advertising.

The company was originally established as a provider of interactive music programming for radio stations, in which listeners were able to upvote and downvote songs played by a particular station in real-time (with songs disliked by listeners being automatically stopped and replaced by a different song). The company introduced its advertising platform in 2012, which eventually became its main business in 2014. iHeartMedia acquired Jelli in December 2018.