Provides free, open-source header bidding technology that enables publishers to maximize ad revenue through increased competition among demand sources while maintaining full control and transparency over their ad stack.
Last updated Feb 12, 2026 by AI Enrichment
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.
Open-source JavaScript library for client-side header bidding on web browsers, supporting 300+ demand partners
Mobile SDK for implementing header bidding in iOS and Android applications
Server-side header bidding solution that reduces page latency and supports multiple demand sources
Header bidding solution specifically designed for video ad inventory across web and mobile
Support for native ad formats within the Prebid framework