WhereIsMyTransport has launched a transit data API that offers transport-related data from certain emerging market cities to third party services and apps. The South Africa based company started with a number of South African cities, but is quickly expanding to Egypt, Nigeria, and Tanzania.
Flexpaper is an open source document viewer--and it is beautiful. The Flexpaper API lets you incorporate your publications into other applications. Flexpaper works on virtually any device and is, no surprise here, flexible. It can display in HTML, HTML5, Adobe Flash or any combination of these.