How many companies use OpenX?
As of October 2026, 8,040 companies show public evidence of using OpenX across the 1,792,947 company domains runsonwhat tracks. That makes OpenX the 26th most used of the 91 Ads & Pixels tools with confirmed customers, behind PubMatic (8,191). The number is a lower bound: a company counts only when a public record, such as a DNS entry or OpenX's code on its website, shows the tool in use.
Which companies use OpenX?
Companies that use OpenX include Yahoo, Tumblr, The New York Times, SoundCloud Global and CNN, according to runsonwhat's public-record scans (October 2026). The biggest industries among OpenX customers are newspapers (17%) and broadcast media (11%). The full list of 8,040 companies can be filtered by industry, company size and country on runsonwhat's OpenX page.
What industries use OpenX the most?
The industries with the most OpenX customers are newspapers (17%), broadcast media (11%) and online media (11%), based on the 3,540 companies with a known industry. Relative to all companies runsonwhat tracks, OpenX stands out most in newspapers (83× the average rate) and broadcast media (43× the average rate).
Is OpenX more popular with startups or large companies?
OpenX is used mostly by mid-size companies: of the 4,223 companies with a known size, 46% have up to 50 employees, 48% have 51 to 1,000 and 5.2% have more than 1,000.
Which countries use OpenX the most?
Most OpenX customers runsonwhat has found are based in the United States (50%), the United Kingdom (6.1%) and India (4.6%), out of 3,999 companies with a known country. Outside the United States, the biggest markets are the United Kingdom and India.
Is OpenX gaining or losing customers?
In the 90 days to October 2026, 4 companies started using OpenX and 4 companies stopped, a net gain of 0. runsonwhat counts a start or a stop only between two checks of the same company done the same way, so a change in how a site is scanned never shows up as churn.
What are the most popular alternatives to OpenX?
By the number of companies using them, the most used Ads & Pixels tools other than OpenX are Google Ads (443,580), Meta Pixel (375,217), Microsoft Ads (113,470) and LinkedIn Insight Tag (108,592), according to runsonwhat (October 2026). Not every tool in a category does the same job, so check each one's page; runsonwhat ranks all Ads & Pixels tools at https://www.runsonwhat.com/tools/ad-platforms.
What other tools do OpenX customers use?
OpenX customers use TripleLift, Index Exchange and Sharethrough far more often than the average company. For example, 58% of OpenX customers also run TripleLift, 139× the rate among all companies runsonwhat tracks, and 42% run Index Exchange.
How does runsonwhat know a company uses OpenX?
runsonwhat reads public records only. For OpenX, that means OpenX on the company's own subprocessor list. A company is listed only when that record is present, and each match keeps the record it came from. DNS is rechecked weekly and websites about monthly.
TripleLiftAds & Pixels139×more likely
Index ExchangeAds & Pixels138×more likely
SharethroughAds & Pixels138×more likely
TapadAds & Pixels135×more likely
SovrnAds & Pixels129×more likely
PubMaticAds & Pixels121×more likely
Amazon Publisher ServicesAds & Pixels120×more likely
MagniteAds & Pixels119×more likely
Media.netAds & Pixels116×more likely
MGIDAds & Pixels109×more likely
33AcrossAds & Pixels108×more likely
TeadsAds & Pixels104×more likely