The Mutationevent QR code generator is a simple API that lets users quickly create QR codes. Users can pass in content such as text, URL and SMS and specify image size and quality. The API returns a URL path of the generated image. It uses HTTP calls and responses are formatted in JSON.
Mopapp tracks & analyzes the sales and downloads of your mobile apps. It automatically integrates with iTunes App Store, Android Market, WP7 Markerplace, BlackBerry App World, Amazon Appstore, GetJar, Handango, and MobiHand. This API can be used to programmatically export sales (to be analyzed in your own systems), or to insert new ones.