The NuORDER Node.js Sample Code demonstrates how to access the API to implement fluent schemas for products, orders, and companies. The example available shows a consumer Key, an options token, and a token secret to authenticate.
Kooaba offers image recognition through its Kooaba API, allowing you to compile metadata on objects in your photos. This can be used for product recognition and pricing, but could also be used to augment personal photo collections, which can be so large that they are nearly impossible to search by hand. There are tons of use cases for image recognition and this API should really open up the field and bring more applications to market.
Prosperent (quickly growing ad network) and CloudFlare (content delivery network focused on low touch app launches) have announced a partnership aimed at quickly monetizing websites without complicated development work. The partnership is simple, seems obvious, and should intrigue developers across many markets. Most importantly, the partnership should create new ways for anybody/any company with an online presence to make money. Check out the PW profiles for the Prosperent API and the CloudFlare API.
The selling of digital goods online is a fast growing industry and FetchApp is designed to make it as streamlined a process as possible. It's basically a digital delivery application that covers everything from digital storage and inventory security to download restrictions and file transfer. FetchApp is already compatible with PayPal, Google Checkout, Goodsie, BigCommerce, FoxyCart, and Shopify, but also provides the FetchApp API for developers who would like to integrate the data with any other system.