Ranked by Tranco traffic rank, so the lower the number, the more visited the site. Buying tells you whether the spots are bid for or bought at a set rate, and language is the one the site publishes in.
| # | Publisher | Pricing | Spots | Buying | Language | Traffic | Categories |
|---|---|---|---|---|---|---|---|
| 1 | Researchgate Ads reaching academic researchers and scientists | — | 5 | Contact | en | 218 | Science |
| 2 | — | 3 | Contact | en | 309 | Education | |
| 3 | — | 5 | Contact | en | 485 | Education | |
| 4 | — | 3 | Contact | en | 493 | Education | |
| 5 | — | 6 | Contact | en | 622 | Education | |
| 6 | — | 9 | ContactAuction | en | 640 | Education | |
| 7 | — | 4 | Contact | en | 737 | Education | |
| 8 | — | 2 | Contact | en | 885 | Education | |
| 9 | — | 7 | ContactAuction | en | 936 | Health | |
| 10 | — | 2 | Contact | en | 951 | Health | |
| 11 | — | — | — | en | 1,036 | News | |
| 12 | — | 5 | Contact | en | 1,165 | Patient & Consumer Health | |
| 13 | — | 5 | Contact | en | 1,271 | Education | |
| 14 | — | — | — | en | 1,319 | Education | |
| 15 | — | 4 | ContactAuction | en | 1,442 | Education | |
| 16 | — | — | — | en | 1,472 | Education | |
| 17 | — | 1 | Auction | en | 1,773 | Science | |
| 18 | — | — | — | en | 1,783 | Education | |
| 19 | — | — | — | en | 1,843 | Education | |
| 20 | — | 1 | Contact | en | 2,533 | News | |
| 21 | — | — | — | en | 2,639 | Education | |
| 22 | — | 9 | Contact | en | 2,685 | Science | |
| 23 | — | 2 | Contact | en | 3,247 | — | |
| 24 | — | 4 | Contact | en | 3,334 | Lifestyle |