Yes. Native ads from two networks Facebook and InMobi can be mediated using Mopub.
Please see the respective integration documentation for Facebook and InMobi. Facebook: https://dev.twitter.com/mopub/third-party/custom-events-facebook-audience-network InMobi: https://dev.twitter.com/mopub/ad-network/custom-events-inmobi
For more information use IOS: https://github.com/mopub/mopub-ios-sdk/wiki/Integrating-Native-Third-Party-Ad-Networks Android: https://github.com/mopub/mopub-android-sdk/wiki/Integrating-Native-Third-Party-Ad-Networks
The MoPub SDK can mediate any native ad network SDK through our adapters and custom events capabilities. As a developer, this allows you to serve ads from multiple networks through our MPNativeAd interface.