Data (Any further recommendations please send my way as this list is no means definitive)
Guardian – Open Platform – The entire guardian newspaper (and many years of archive material) all available to use via an API.
New York Times – I believe they were the first newspaper to open their content via an API.
Wattson – If you’ve ever wanted to know how much electricity you consume then the Wattson is for you – You clip it to your electricity supply and it collates all the usage info. You can then interface with the API to start to play with the data.
Pachube – Taking the Wattson to a much higher level – Pachube is a dataset collated from buildings – Lots of environmental data to play with – building temperatues, humidity, lights. Building 2.0 here we come.
Last.FM – The API has exposed a mass of user data regarding music usage.
Flickr – Photographs on tap with a very comprehensive API. Very well documented.
Programmable Web – A great resource of APIs and datasets.
Trynt – Lots of APIs to use including an IMDB API.
Open Government Data – An initiative led by Microsoft publishing data from governments.
Timetric.com – Lots of data with an API.
Check the original post.