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Adzerk

Adzerk is a maker of SaaS ad management software, intended for developers and publishers to serve display and native ads in their web properties, such as web pages or mobile apps. Adzerk's main product is a web and API based ad server created with the core features of "fast ad serving, better forecasting, and first class usability". Other features include the ability to vote ads up or down. A module for serving Adzerk ads has also been created by the Drupal community.

Adzerk states that it serves billions of ad impressions per month, and has over 100 paying customers on thousands of sites.