Smaato - Smaato is a mobile-first platform and free ad server for publishers & app developers.
Exapik - Exapik is a data-driven mobile app monetization platform.
NativeX - NativeX, A One-Stop Mobile Solution
Tappx - Tappx is an open app developers community for monetization and cross-promotion.
Widespace Summit - Summit is a full-stack programmatic ad platform and marketplace designed specifically to deliver branding campaigns on mobile.
Facebook Audience Network - Facebook Audience Network is designed to help monetize your apps and websites with ads from global Facebook advertisers.