Admob by Google

AppLovin is a mobile advertising company that enables brands to acquire and re-engage customers on mobile.
1 billion users
Reach 70% of a brand’s consumers within one week
$20 ROAS for every $1 spent, advertisers see $20 return
300+ major brands in retail, travel, lifestyle, gaming and more ...

AppFlood is a 100% transparent cross-promotion network that allows iOS and Android developers to see
and control every aspect of monetization and distribution. AppFlood also features multi-dimension analytics
and ad network mediation.

Adelphic Mobile is a unique mobile advertising platform that enables the efficient buying and selling of targeted mobile media.

Co-founder: Tomer Bar Zeev IronSource is a mobile advertising network, prefer the classic formats - popup, banners, etc. One of the popular product is InstallCore