Prebid.org

Market leader and de facto standard for open-source header bidding solutions

Prebid.org is an independent, open-source organization that develops and maintains header bidding solutions for digital advertising. Originally created by AppNexus (now Xandr) in 2015 and later spun off as an independent open-source project, Prebid provides free, open-source software that enables publishers to implement header bidding on their websites and mobile apps. The organization's flagship products include Prebid.js for web, Prebid Mobile SDK for apps, and Prebid Server for server-side header bidding. Prebid has become the industry standard for header bidding, with widespread adoption across thousands of publishers globally. As a non-profit open-source project governed by Prebid.org, the organization operates under a community-driven model with contributions from major AdTech companies, publishers, and developers. Prebid's solutions allow publishers to offer their ad inventory to multiple demand sources simultaneously, increasing competition and potentially maximizing ad revenue. The organization is overseen by a board of directors representing various stakeholders in the advertising ecosystem and maintains its technology through community contributions and the support of member companies. Prebid has fundamentally transformed programmatic advertising by democratizing access to header bidding technology that was previously only available through proprietary solutions.