The Embedly API allows developers to embed videos, images and rich media from 98 services through one API. Visit the documentation to learn more.

The geo-location-javascript framework gives access to mobile web users location via javascript. It hides the underlying platform specific implementation through a simple unified interface.

To assist engineers in the development phase it provides a simple mechanism to simulate users locations and movements without being there in the real world.

pubsub via webhooks, or "twitter" for your applications

Piston is a Django mini-framework creating APIs.

SesameVault is a web service for storing, managing, and distributing video and audio content. The SesameVault API allows you to integrate SesameVault with your own application or service.

GoogleMaps mit hCard-Support. Nice.