Prebid

Prebid is an open-source JavaScript library designed for header bidding in digital advertising. It helps publishers increase ad revenue by allowing multiple ad exchanges and ad networks to compete for ad impressions in real-time. Prebid empowers publishers with greater control over their ad stack and allows them to optimize ad yields by selecting the best-paying bid for each impression. It also promotes transparency and fairness in the ad auction process.

Website: https://prebid.org