Prebid is the more common of the two in our index: it runs on 2,615 websites against 614 for theTradeDesk, and 70 sites use both. Counts come from real scans, not vendor claims.
Prebid is an open-source header bidding wrapper. It forms the core of our Nucleus ad platform, helping maximize revenue and performance for publishers.
theTradeDesk is an technology company that markets a software platform used by digital ad buyers to purchase data-driven digital advertising campaigns across various ad formats and devices.
70 sites run both Prebid and theTradeDesk. That is 11% of the sites using theTradeDesk, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.