# Companies that use OpenX

As of October 2026, 11,977 companies show public evidence of using OpenX (Ad exchange), according to runsonwhat.

- Tool: [OpenX](https://openx.com), category [Ads & Pixels](https://www.runsonwhat.com/tools/ad-platforms)
- Companies using it now: 11,977
- Stopped using it (seen on a same-method rescan): 2
- Started in the last 30 days: 4

## Who uses OpenX

Segments where OpenX customers are more common than among all companies we track:

- Newspapers: 80× more likely (647 customers)
- Broadcast Media: 44× more likely (470 customers)
- Online Media: 24× more likely (471 customers)
- Media Production: 20× more likely (228 customers)
- Publishing: 17× more likely (328 customers)

## OpenX customers by industry

| Industry | Share of customers |
|---|---|
| Newspapers | 16% |
| Online Media | 11% |
| Broadcast Media | 11% |
| Internet | 9.2% |
| Publishing | 8.0% |
| Media Production | 5.5% |
| Software | 4.7% |
| Marketing and Advertising | 4.3% |

## OpenX customers by company size

| Company size | Share of customers |
|---|---|
| 1–10 employees | 18% |
| 11–50 employees | 35% |
| 51–200 employees | 29% |
| 201–1,000 employees | 13% |
| 1,001–5,000 employees | 3.2% |
| 5,001–10,000 employees | 0.52% |
| 10,000+ employees | 0.76% |

## OpenX customers by country

| Country | Share of customers |
|---|---|
| United States | 40% |
| United Kingdom | 6.4% |
| Japan | 5.4% |
| Germany | 5.2% |
| India | 4.3% |
| Italy | 4.0% |
| Canada | 3.8% |
| Spain | 3.7% |

## Alternatives to OpenX

| Tool | Companies |
|---|---|
| [Google Ads](https://www.runsonwhat.com/reverse/google-ads) | 452,126 |
| [Meta Pixel](https://www.runsonwhat.com/reverse/meta-pixel) | 380,123 |
| [Microsoft Ads](https://www.runsonwhat.com/reverse/bing-ads) | 114,583 |
| [LinkedIn Insight Tag](https://www.runsonwhat.com/reverse/linkedin-insight) | 110,516 |
| [TikTok Pixel](https://www.runsonwhat.com/reverse/tiktok-pixel) | 44,682 |
| [Google Ad Manager](https://www.runsonwhat.com/reverse/google-ad-manager) | 41,487 |
| [Microsoft Xandr](https://www.runsonwhat.com/reverse/xandr) | 33,384 |
| [Pinterest](https://www.runsonwhat.com/reverse/pinterest) | 30,055 |
| [X Ads](https://www.runsonwhat.com/reverse/x-ads) | 23,403 |
| [Google AdSense](https://www.runsonwhat.com/reverse/google-adsense) | 20,426 |

## OpenX customers also use

- [TripleLift](https://www.runsonwhat.com/reverse/triplelift): 71% of OpenX customers, 109× the average company
- [Sharethrough](https://www.runsonwhat.com/reverse/sharethrough): 58% of OpenX customers, 107× the average company
- [Index Exchange](https://www.runsonwhat.com/reverse/index-exchange): 66% of OpenX customers, 107× the average company
- [Sovrn](https://www.runsonwhat.com/reverse/sovrn): 61% of OpenX customers, 102× the average company
- [Amazon Publisher Services](https://www.runsonwhat.com/reverse/amazon-publisher-services): 76% of OpenX customers, 99× the average company
- [PubMatic](https://www.runsonwhat.com/reverse/pubmatic): 86% of OpenX customers, 98× the average company
- [Media.net](https://www.runsonwhat.com/reverse/media-net): 72% of OpenX customers, 97× the average company
- [Magnite](https://www.runsonwhat.com/reverse/magnite): 91% of OpenX customers, 96× the average company
- [Teads](https://www.runsonwhat.com/reverse/teads): 55% of OpenX customers, 92× the average company
- [MGID](https://www.runsonwhat.com/reverse/mgid): 31% of OpenX customers, 90× the average company

## Companies that use OpenX (first 40 of 11,977)

| Company | Domain | Industry | Country |
|---|---|---|---|
| [Yahoo](https://www.runsonwhat.com/company/yahoo.com) | yahoo.com | Internet | United States |
| [Tumblr](https://www.runsonwhat.com/company/tumblr.com) | tumblr.com |  |  |
| [The New York Times](https://www.runsonwhat.com/company/nytimes.com) | nytimes.com | Newspapers | United States |
| [SoundCloud Global Limited & Co.](https://www.runsonwhat.com/company/soundcloud.com) | soundcloud.com | Music | Germany |
| [CNN](https://www.runsonwhat.com/company/cnn.com) | cnn.com | Broadcast Media | United States |
| [Theguardian](https://www.runsonwhat.com/company/theguardian.com) | theguardian.com |  |  |
| [BBC](https://www.runsonwhat.com/company/bbc.co.uk) | bbc.co.uk | Tv | United Kingdom |
| [IMDb](https://www.runsonwhat.com/company/imdb.com) | imdb.com |  | United Kingdom |
| [Reuters](https://www.runsonwhat.com/company/reuters.com) | reuters.com | Telecommunications | Canada |
| [TinyURL](https://www.runsonwhat.com/company/tinyurl.com) | tinyurl.com |  |  |
| [HP® Official Site](https://www.runsonwhat.com/company/hp.com) | hp.com | Computer Hardware | United States |
| [The Weather Channel](https://www.runsonwhat.com/company/weather.com) | weather.com |  |  |
| [EA Romania](https://www.runsonwhat.com/company/ea.com) | ea.com | Video Games | United States |
| [The Washington Post](https://www.runsonwhat.com/company/washingtonpost.com) | washingtonpost.com | Newspapers | United States |
| [NVIDIA - World Leader in Artificial Intelligence Computing](https://www.runsonwhat.com/company/nvidia.com) | nvidia.com | Semiconductor | United States |
| [ESPN](https://www.runsonwhat.com/company/espn.com) | espn.com | Television | United States |
| [Globo](https://www.runsonwhat.com/company/globo.com) | globo.com | Publishing | Brazil |
| [Business Insider](https://www.runsonwhat.com/company/businessinsider.com) | businessinsider.com |  |  |
| [AOL](https://www.runsonwhat.com/company/aol.com) | aol.com | Internet | United States |
| [Speedtest.net](https://www.runsonwhat.com/company/speedtest.net) | speedtest.net |  |  |
| [CNBC](https://www.runsonwhat.com/company/cnbc.com) | cnbc.com |  |  |
| [Fandom, Inc.](https://www.runsonwhat.com/company/fandom.com) | fandom.com |  | United States |
| [Scribd](https://www.runsonwhat.com/company/scribd.com) | scribd.com | Publishing | United States |
| [Stack Exchange Inc.](https://www.runsonwhat.com/company/stackoverflow.com) | stackoverflow.com |  | United States |
| [Fox News](https://www.runsonwhat.com/company/foxnews.com) | foxnews.com |  | United States |
| [USA TODAY](https://www.runsonwhat.com/company/usatoday.com) | usatoday.com | Newspapers | United States |
| [Encyclopædia Britannica Inc.](https://www.runsonwhat.com/company/britannica.com) | britannica.com |  | United States |
| [Daily Mail US](https://www.runsonwhat.com/company/dailymail.com) | dailymail.com | Publishing | United States |
| [CBS News](https://www.runsonwhat.com/company/cbsnews.com) | cbsnews.com |  |  |
| [Merriam-Webster Inc.](https://www.runsonwhat.com/company/merriam-webster.com) | merriam-webster.com | Publishing | United States |
| [CNET](https://www.runsonwhat.com/company/cnet.com) | cnet.com | Online Media | United States |
| [Imgur](https://www.runsonwhat.com/company/imgur.com) | imgur.com |  | United States |
| [MLB.com](https://www.runsonwhat.com/company/mlb.com) | mlb.com | Sports | United States |
| [Apnews](https://www.runsonwhat.com/company/apnews.com) | apnews.com |  |  |
| [Tedxveteransaffairs](https://www.runsonwhat.com/company/ted.com) | ted.com | Government Administration | United States |
| [Allaboutcookies](https://www.runsonwhat.com/company/allaboutcookies.org) | allaboutcookies.org |  |  |
| [The Verge](https://www.runsonwhat.com/company/theverge.com) | theverge.com | Publishing | United States |
| [Biblegateway](https://www.runsonwhat.com/company/biblegateway.com) | biblegateway.com |  |  |
| [Genius](https://www.runsonwhat.com/company/genius.com) | genius.com | Content | United States |
| [Character.ai](https://www.runsonwhat.com/company/character.ai) | character.ai | Software | United States |

The full list is on https://www.runsonwhat.com/reverse/openx for signed-in users.

## FAQ

### How many companies use OpenX?

As of October 2026, 11,977 companies show public evidence of using OpenX across the 1,794,819 company domains runsonwhat tracks. That makes OpenX the 20th most used of the 91 Ads & Pixels tools with confirmed customers, behind PubMatic (12,804). 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 (16%) and online media (11%). The full list of 11,977 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 (16%), online media (11%) and broadcast media (11%), based on the 4,111 companies with a known industry. Relative to all companies runsonwhat tracks, OpenX stands out most in newspapers (80× the average rate) and broadcast media (44× the average rate).

### Is OpenX more popular with startups or large companies?

OpenX is used mostly by small companies: of the 5,001 companies with a known size, 53% have up to 50 employees, 43% have 51 to 1,000 and 4.4% have more than 1,000. Compared with all companies runsonwhat tracks, OpenX is 9.2× as common among companies with 1–10 employees.

### Which countries use OpenX the most?

Most OpenX customers runsonwhat has found are based in the United States (40%), the United Kingdom (6.4%) and Japan (5.4%), out of 5,644 companies with a known country. Outside the United States, the biggest markets are the United Kingdom and Japan.

### 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 (453,561), Meta Pixel (380,653), Microsoft Ads (114,709) and LinkedIn Insight Tag (110,740), 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, Sharethrough and Index Exchange far more often than the average company. For example, 67% of OpenX customers also run TripleLift, 109× the rate among all companies runsonwhat tracks, and 55% run Sharethrough.

### 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.


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Source: runsonwhat, https://www.runsonwhat.com/reverse/openx (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.