21 APIs Used in 7 Days: Amazon, Flickr, Foursquare, Google, Last.fm, RPX, Twitter

This past week 15 new mashups were added to our mashup directory and 21 different APIs were used to build them. Some of the newer or less frequently seen APIs include Cloudvox, Foursquare, Geolenz, Justin.tv, Kelkoo and Shopify. The most often used APIs this week are Google Maps, Justin.tv and Twitter. And the most commonly used types of APIs were Mapping (3 APIs, 10 mashups), Search (3 APIs, 3 mashups) and Photos (3 APIs, 3 mashups). The list below shows which APIs were used by which mashups:

Amazon S3 Amazon S3 used in Japan Talent Data Box

Bit.ly Bit.ly used in Mobbler

Cloudvox Cloudvox used in ShopTalk

Flickr Flickr used in Geoslideshow

Foursquare Foursquare used in Mobbler

Geolenz Geolenz used in PicTell: Self Describing Photos

Google Ajax Search Google Ajax Search used in Japan Talent Data Box

Google Earth Google Earth used in Geoslideshow

Google Maps Google Maps used in Geoslideshow, Hen Night and Bachelorette Planning and Invite Site, Mobbler, MyLocalTribune, Santa Monica Baykeeper Lighthawk Observations, SportLogger, Toronto Free Parking, Zombie Strategies

Google Picasa Google Picasa used in Geoslideshow

Google Search Google Search used in Five Filters: Explore Independent Media

Google Visualization Google Visualization used in Santa Monica Baykeeper Lighthawk Observations

Justin.tv Justin.tv used in MoviesJustIn

Kelkoo Kelkoo used in XY Shop

Last.fm Last.fm used in Mobbler

Lyricsfly Lyricsfly used in Mobbler

Panoramio Panoramio used in PicTell: Self Describing Photos

RPX RPX used in SportLogger

Shopify Shopify used in ShopTalk

Twitter Twitter used in Japan Talent Data Box, Mobbler, MyLocalTribune, SiftLinks, SportLogger

Yahoo Term Extraction Yahoo Term Extraction used in Five Filters: Explore Independent Media

Mashups of the day:
And each day there is one mashup selected to be Mashup of the Day. Here are last week's winners:

 Five Filters: Explore Independent Media




 PicTell: Self Describing Photos



Be sure to read the next Mashups article: Best New Mashups: Who's Feeling Aggregated?