The Mobage DeNA Games Java Sample Code by DeNA demonstrate how to integrate gaming mobile capabilities into applications. Code shows how to import the project in Eclipse, configure, and authorize. Almost all content is available in English, with the exception of some sections in Japanese.
Magickly aims to make image manipulation possible as a simple web service. The Magickly API is very easy to use, and completely open source. It requires no API key, and allows a developer to use a lot of different image manipulations on any web-accessible image. Magickly is an open source, simplified version of the Aviary Effects API, which has a contest ending next week.