WURFL

The WURFL is an XML configuration file which contains information about capabilities and features of many mobile devices. WURFL Web Service provides a RESTful interface to the WURFL database. If a user is writing a web application for mobile phones and needs to know the capabilities of a specific device, they can use this service to query the exact capabilities of the device without having to build an implementation of WURFL. Responses are returned in JSON format.
WURFL

Watwet

The Watwet micro-blogging service includes an API that gives RESTful access to the Watwet database and activity streams for users, timelines, friends, followers, favorites and others, using XML and JSON formats.
Watwet

Walk Score

Walk Score calculates the walkability of an address based on the distance from a house to nearby amenities. The Walk Score API uses a RESTful interface and returns the Walk Score for any latitude and longitude in the U.S. in XML or JSON format.
Walk Score

PostRank Data Mining

PostRank uses audience interaction with content to filter and deliver relevant news and information to users. The Data Mining API allows users to to access information by topic, time period, keyword, and engagement. It uses a RESTful interface and responses are returned in either JSON, XML or RSS.
PostRank Data Mining

PostRank Real-Time Engagement

PostRank uses audience interaction with content to filter and deliver relevant news and information to users. The Engagement API is a real-time activity stream of where and how users engage with content. JSON responses include engagement change notification, feeds the story has appeared in, dynamic 30-day engagement for each feed and new postrank score and color for each story.
PostRank Real-Time Engagement

PostRank Real-Time Content

PostRank uses audience interaction with content to filter and deliver relevant news and information to users. The Content API delivers content from sources shown to generate audience engagement in the last 30 days. Responses are in JSON encoded story packet, containing feed meta data, the story, and all other associated meta data.
PostRank Real-Time Content

Calameo

Calam�o is a program that lets users upload documents from many major formats and create interactive web publications. The API uses either a RESTful interface or a deprecated SOAP interface allowing users to integrate publishing and other advanced features in their applications. To access the API, users must upgrade to a premium account.
Calameo

FoolDNS

FoolDNS is a service that provides protection from malware, phishing and tracking cookies. With this API users can integrate their system with FoolDNS. It exposes a REST interface that can be queried via HTTP calls. Responses are returned in XML, JSON, HTML and YML format.
FoolDNS

Sourcemap

Sourcemap is project from the MIT Media Lab. It is a tool for producers, business owners and consumers to understand the impact of supply chains. The services lets you simulate the impact of manufacturing, transporting, using and throwing away products using our Life-Cycle Assessment calculator. This web-based tool uses linked data from geological and geographic resources. Each Sourcemap can be used to help market socially- and environmentally- conscious products and to buy carbon offsets.
Sourcemap

Whoozy Person Search

This API is part of the people search engine http://whoozy.com. This API uses a RESTful interface to allow an application to search for a name in social networks, search engines, blogs, news, pictures, phone numbers, email addresses and more. Responses are formatted in either XML or JSON.
Whoozy Person Search