Cross Platform Native Plugins a true cross platform tool for Unity which provides unique and unified way to access native functionality on mobile platforms. Its a great product and its completely plug N play i.e., you can use it directly without any setup. Plugin has been designed and developed to ensure that usability is extremely easy and it provides simulation tools for Unity Edtor which will definitely save your testing time on mobiles.

Ultra pack supports iOS (v6.0 and above) as well as Android (v2.3.3 and above) platforms. Source code is included along with API documentation.

Important links: Official thread | Documentation | Forum | Manual | Lite Version (Free trial)

Feature set:
• Address Book
• Billing (Apple store, Google Play Store) with Receipt Validation
• Game Services
• Media Library (Images, Video, Youtube)
• Network Connectivity
• Notification System (Local and Push)
• Sharing (FB, Twitter, Mail, Messaging, WhatsApp)
• Twitter SDK
• UI Dialogs (Alert, Prompt)
• Rate My App
• WebView


Note:
• Android Manifest required for plugin is auto generated based on features used (configured using NPSettings).
• Twitter package inclusion is selective (configured using NPSettings).
• Android's Main Activity isn't redefined, hence our plugin can be integrated along with any other 3rd party plugin.
• In-app billing on Android uses Google In-App billing version 3.
• On Android, hardware flag needs to be enabled for playing video.
• Plugin works with il2cpp.
• Plugin works with Unity Cloud Build.
• Simulation of Twitter and WebView features are currently not supported in Unity Editor.