| API | Description | Category | Updated |
|---|---|---|---|
| 411Sync | SMS, WAP, and email messaging | Messaging | 2006-02-08 |
| Acrostic.me Trending | Bible poetry feed service | Feeds | 2012-08-06 |
| Adhocracy | German group decision-making platform | Social | 2012-12-19 |
| Adocu | Single word microblogging service | Blogging | 2010-12-21 |
| Agent Storm | Real Estate systems connection | Real Estate | 2010-03-31 |
| All for Good | Find and share volunteer opportunities | Other | 2009-06-30 |
| Amnesty International | Database of censored sites and data | Other | 2006-10-28 |
| AniDB | Anime information database | Entertainment | 2013-05-15 |
| Audiobaba | Music search and recommendation engine | Music | 2011-12-13 |
| Baconfile | Web based file storage interface for Amazon s3 | Storage | 2009-12-18 |
| BART | Transit tracking service for San Francisco, California | Transportation | 2008-10-30 |
| BBC Music | Music information service | Music | 2009-03-19 |
| Bentio | Microblogging Service | Blogging | 2011-02-08 |
| Berlin Open Data | Berlin data and information | Government | 2011-12-06 |
| BetaSignal | News aggregator | Feeds | 2011-08-30 |
| Bing Maps | Microsoft online mapping service | Mapping | 2009-06-09 |
| Bitacoras.com | Spanish social blog network | Blogging | 2010-03-24 |
| BlastCasta Feed | RSS feed management and filtering service | Feeds | 2009-01-04 |
| Blekko | Search engine | Search | 2012-01-11 |
| Blellow | Microblogging platform and social network | Social | 2009-07-31 |
| Blip.tv | Video upload and sharing service | Video | 2008-01-13 |
| BlockChalk | Local community social space | Social | 2009-09-15 |
| Bluyah | Data transformation service | Tools | 2009-07-31 |
| Bounce MixedResults | Search engine results compiler | Search | 2012-12-28 |
| Boxee | Media center service | Video | 2009-12-18 |
| Boxoh | Package tracking service | Shipping | 2011-08-30 |
| Breeziee | File Selling Service | Shopping | 2012-08-01 |
| Bulletin Messenger | SMS Service Provider | Messaging | 2012-08-30 |
| CatalogWS | Academic library | Reference | 2008-02-07 |
| Centers for Disease Control (CDC) Content Syndication | Health information content syndication service | Medical | 2011-09-27 |
| Cerego iKnow | Social cognitive learning service | Other | 2008-10-30 |
| Christian Social Graph | Christian volunteer opportunities directory | Search | 2012-04-20 |
| ChristianChirp | Christian social networking service | Social | 2011-08-02 |
| CiteULike | Citation management service | Reference | 2011-11-08 |
| Civic Commons Marketplace | Open government data database and sharing platform | Government | 2012-01-20 |
| Civicboom | News crowdsourcing platform | News | 2011-10-26 |
| cnFOL | Chinese microblogging service | Blogging | 2010-12-21 |
| Cogenz | Social bookmarking service | Bookmarks | 2007-09-20 |
| Colr.org | Color and color scheme service | Other | 2011-08-08 |
| CS50 | Harvard campus information | Education | 2012-11-29 |
| CS50 HarvardEvents | Harvard Events Calendar | Events | 2011-09-13 |
| DataSift | Real-Time Social Data Mining | Social | 2010-12-20 |
| Daum Context Keyword | Contextual keyword extraction service | Tools | 2011-07-12 |
| Daum Events | Movie and festival search service | Events | 2011-07-12 |
| Daum Search | Search services | Search | 2011-07-12 |
| Deal Magic | List of Daily Deals | Shopping | 2011-01-19 |
| Dealinium | Local deals aggregation service | Shopping | 2011-06-14 |
| Destakes | Portuguese news aggregator | News | 2012-12-20 |
| Destinde | Travel information service | Travel | 2009-02-25 |
| DFT.BA | Link (URL) shortening service | Internet | 2011-10-07 |
| Digitaliser | Danish social networking site | Social | 2011-10-07 |
| DonorsChoose | An online charity connecting you to classrooms in need | Education | 2009-04-03 |
| EasyEthical | Ethical consumer guide | Shopping | 2011-01-04 |
| eLife | Biological sciences journal access service | Science | 2013-05-02 |
| Europeana OpenSearch | European museum collection metadata | Education | 2011-06-07 |
| Eventification | Social Event Site | Events | 2011-02-28 |
| Exploring Surrey's past | Surrey County historical resource | Reference | 2013-02-18 |
| FAROO | Web search engine | Search | 2012-05-15 |
| Feedbooks | Mobile book and RSS services | Telephony | 2008-09-14 |
| Feedzilla | News feed aggregator | Feeds | 2010-10-21 |
| Feedzz | RSS feed management and filtering service | Feeds | 2008-08-16 |
| Fillbug | Query by example service | Reference | 2012-02-23 |
| Findory | Personalized news aggregation | News | 2006-01-22 |
| Fire Eagle | Geo location sharing service | Social | 2008-03-04 |
| FiveFilters.org | Content extraction service | Tools | 2010-01-19 |
| FlightStats | Live flight aircraft and delays tracking | Travel | 2008-10-23 |
| Flow | Real-time information and data platform | Tools | 2012-04-02 |
| ForSWOR | Star Wars gaming forum | Games | 2012-06-01 |
| Fotolia | Royalty free stock photos | Photos | 2007-01-01 |
| FriendFeed | Activity stream aggregator | Other | 2008-03-25 |
| Geograph | British Isles photo service | Photos | 2008-02-24 |
| GeoGratis | Geographic data and mapping service | Mapping | 2012-01-19 |
| GeoIQ | Geo Data, Visualization, and Analysis | Mapping | 2006-11-15 |
| GeoNames | Geographic name and postal code lookup | Reference | 2006-01-12 |
| Goodreads | Book search and social book services | Other | 2008-10-09 |
| Google Buzz | Social sharing service | Social | 2010-02-09 |
| Google Calendar | Calendar service | Calendar | 2006-04-20 |
| Google Contacts | Contact list management | Other | 2008-03-05 |
| Google Documents List | Document management services | Office | 2007-08-07 |
| Google Picasa | Photo management and sharing service | Photos | 2007-03-23 |
| Google Provisioning | User provisioning for Google Apps | Enterprise | 2007-02-23 |
| Google Sidewiki | Access to Google Sidewiki content | Internet | 2009-09-23 |
| Goozex | Video game trading services | Games | 2008-08-02 |
| Grouper Video | Video sharing service | Media Management | 2006-03-20 |
| GroupMe | Social bookmarking | Bookmarks | 2007-12-25 |
| Groups Near You | Local groups search service | Social | 2009-02-08 |
| Gruvr | Live music and concert information | Music | 2007-12-31 |
| HackSense | H.A.C.K. website status monitoring service | Internet | 2012-07-05 |
| Harvard Dash | Digital repository of scholarly articles | Education | 2013-05-07 |
| Hotwire | Travel deals and historical price data from Hotwire.com | Travel | 2009-07-23 |
| Howcast | How-to video search service | Video | 2008-09-03 |
| I'vRead | Social Reading Record | Social | 2011-05-05 |
| idiomag | Musical artist information service | Music | 2008-12-16 |
| Interserve Job Openings | Ministry jobs feed service | Feeds | 2012-07-24 |
| iOpenAt.com | Business opening hours | Retail | 2012-05-15 |
| IsItBirthday | Birthday Reminder Service | Calendar | 2012-06-21 |
| itDuzzit | Cloud application integration service | Utility | 2011-11-29 |
| Jawfish | RSS/Atom feed widget | Feeds | 2012-03-12 |
| Jiglu Insight | Website content personalization platform | Internet | 2011-02-08 |
| JobMotel | Job feeds service | Job Search | 2009-05-30 |
| JournalTOCs | Journal search service | Search | 2010-12-07 |
| Kasabi | Data marketplace | Reference | 2011-05-31 |
| Kuler | Adobe web service for creating color themes | Other | 2007-09-01 |
| Kwwika | Real-time push notifications and messaging service | Internet | 2010-07-11 |
| Last.fm | Online radio service | Music | 2005-10-30 |
| Let's Be Trends | Trend tracking on Twitter | Social | 2009-09-27 |
| LifeDesks | Online science and taxonomy community | Reference | 2011-08-09 |
| Linkalope | Twitter link search service | Search | 2011-01-11 |
| Magma | Video directory and discovery service | Video | 2012-01-17 |
| ManageBGL Diabetes | Diabetes Management Platform | Medical | 2012-09-11 |
| Map Data Services QuickMap | Data mapping service | Mapping | 2012-02-13 |
| mapme | Location mapping service | Social | 2009-03-06 |
| MapQuest | Online mapping service | Mapping | 2008-03-08 |
| MassDOT MBTA | Massachusetts transit data feeds service | Transportation | 2011-10-18 |
| Mbar | Event Information for the Mbar Café and Club | Events | 2012-08-14 |
| Medioh | Video search service | Video | 2008-03-23 |
| Meetup | Social events service | Social | 2008-07-10 |
| MetaWeblog | Blog editing service | Blogging | 2011-12-19 |
| Metro Mapper | Louisville, Kentucky data maps | Mapping | 2011-12-09 |
| Micello | Indoor mapping service | Mapping | 2011-11-19 |
| Microsoft Bing Maps | Mapping services | Mapping | 2005-12-02 |
| Mobivity | SMS marketing messaging service | Messaging | 2007-01-19 |
| MotorsportReg.com | Motorsports events and calendar service | Sports | 2010-03-31 |
| Muzu.tv Data | Music video web site | Video | 2012-01-31 |
| MyFantasyLeague | American football statistics services | Sports | 2008-11-08 |
| n0tice | Public notice board | News | 2011-05-17 |
| Nature.com Blogs | Nature Publishing Group blog tracking and indexing service | Blogging | 2012-02-14 |
| Nature.com OpenSearch | Scientific publication search service | Search | 2013-01-02 |
| NCSU Libraries CatalogWS | Library catalog and services | Reference | 2011-10-11 |
| Netflix | Movie rental service | Video | 2008-09-30 |
| NetXposure | Digital asset management software | Media Management | 2012-07-12 |
| NewsCred Platform | News syndication service | News | 2011-04-26 |
| NewsGator | Feed aggregation | Feeds | 2005-09-04 |
| NewsKnowledge | News and business information service | News | 2011-12-09 |
| Newsmonster.org | RSS feed aggregator service | Feeds | 2011-07-14 |
| Nigerian Stock Exchange | Nigerian Stock Feed Service | Feeds | 2012-06-19 |
| nooked | Feed management services for eCommerce | Shopping | 2008-05-11 |
| Notches | Distributed user reviews service | Recommendations | 2008-03-16 |
| NPR | US National Public Radio | News | 2008-07-15 |
| OCLC Virtual International Authority File | Library authority file service | Tagging | 2011-11-01 |
| olpcMAP | Education technology mapping service | Mapping | 2011-12-19 |
| ondi.ro Geocoding | Romanian geocoding service | Mapping | 2009-05-26 |
| Open Charge Map | Electric vehicle charging point database. | Reference | 2011-05-13 |
| Open Data Badalona | Badalona city data services | Government | 2011-06-30 |
| Orb | Digital media remote access and management | Media Management | 2005-09-25 |
| Pachube | Realtime device and buildings monitoring | Other | 2009-10-28 |
| PATLive | Hosted communications center integration service | Telephony | 2012-02-21 |
| Phreadz | Information feed creation service | Feeds | 2011-07-28 |
| Pin 'n' Tag | Geolocation information service | Mapping | 2013-02-20 |
| PlayPhone | Partner with Playphone to offer Mobile content in over 20 countries | Music | 2009-05-30 |
| Plings | Places and Activities Database | Entertainment | 2011-09-22 |
| PostRank Data Mining | Feed and story retrieval and analysis | Internet | 2010-04-24 |
| Prayer Planet | Online prayer service | Social | 2011-08-02 |
| Primal | Interest networking data and filtering | Search | 2010-12-03 |
| Producteev | Multi-task collaboration tool | Tools | 2010-03-05 |
| ProgrammableWeb | API for APIs | Internet | 2009-04-24 |
| Push Channels | Real-time push service | Internet | 2010-12-14 |
| Questsin | Thesaurus and answers lookup services | Answers | 2008-12-27 |
| Quoqu | Microblogging service for finance traders | Financial | 2009-06-17 |
| RatePubs | Pub and bar reviews services | Food | 2008-11-26 |
| Reuters Spotlight | Reuters.com content service | News | 2008-05-15 |
| Review Trackers | Review monitoring service for businesses | Tools | 2012-08-14 |
| Sapo Auto Search | Automobile search service | Search | 2012-04-27 |
| Sapo Games | Gaming content feeds | Games | 2012-05-04 |
| Sapo Tags | Tag search service | Search | 2012-05-04 |
| SeeClickFix | Share non-emergency problems in your neighborhood | Government | 2010-04-12 |
| SemanticWire | Semantic news reader service | News | 2011-06-14 |
| SendMe Mobile | Mobile entertainment service | Entertainment | 2011-11-15 |
| ServiceU | Event and donation management service | Events | 2013-02-19 |
| ShopSense | Online fashion search and shopping | Shopping | 2011-01-26 |
| SHOUTcast Radio | Internet radio database service | Reference | 2010-12-14 |
| SiteShuffle | Customizable website link list service | Internet | 2013-02-11 |
| SMS Freedom | Bulk text messaging service | Messaging | 2011-10-07 |
| SnappyFingers | Question and answer search engine | Search | 2008-12-05 |
| Snapr | Real-time geosocial photosharing service | Photos | 2011-01-26 |
| SOAPBuilders Interop | Server implementation update notification service | Internet | 2013-04-18 |
| Social Whale | Twitter service extensions | Social | 2011-11-15 |
| Socialight | Social community | Social | 2008-11-23 |
| Songza | Music popularity and user playlist services | Music | 2008-05-18 |
| Spinn3r | Blog search index service | Blog Search | 2007-12-13 |
| Spongecell | Online calendar service | Calendar | 2006-08-25 |
| Spore | Spore game database and content | Games | 2009-01-11 |
| Spotzot | Deal targeting and loyalty program service | Advertising | 2011-11-21 |
| Spraci | Events and clubs database | Events | 2006-02-14 |
| Stock Market Data | Stock market data service | Financial | 2011-10-02 |
| SweetSpot | Diabetes management service | Other | 2010-04-18 |
| Talis | Linked Data hosting platform | Database | 2006-06-07 |
| The Oxford Celtic Coin Index | British coin collection images and data | Education | 2011-10-18 |
| This Is My Jam | Music recommendation and sharing service | Music | 2012-07-16 |
| to.uri.st | Travel and tourist database services | Travel | 2008-10-18 |
| Tout Live | Real-time marketing service | Social | 2011-08-29 |
| Travelope | Travel booking and comparison services | Travel | 2012-07-30 |
| tunesBag | Music storage, streaming, and sharing | Music | 2008-10-23 |
| Tweet Scan | Twitter and identi.ca search results service | Search | 2008-10-25 |
| Microblogging service | Social | 2006-12-08 | |
| TxtBear | Document Publishing Service | Tools | 2013-04-15 |
| UK BIS | UK government business support sector | Government | 2011-11-01 |
| Unfuddle | Bug and issue tracking | Project Management | 2007-12-18 |
| UniProt | Protein sequence and annotation services | Medical | 2008-07-20 |
| Univision | Spanish language content provider | Entertainment | 2011-12-08 |
| VidCaster | Video site creation platform | Video | 2011-06-10 |
| Videodetective | Film trailers, cast, images, and related information | Video | 2007-07-01 |
| Vodafone Betavine | Mobile web services | Messaging | 2007-06-11 |
| Wassr | Twitter for SecondLife microblogging service | Blogging | 2008-12-21 |
| Wellynews | Wellington New Zealand news search | News | 2009-08-27 |
| What The Trend? | Twitter trending service | Social | 2009-04-16 |
| Widgetbox | Create and distribute your widget through the world's largest widget gallery | Widgets | 2007-12-28 |
| Wookmark | Image collection and sharing service | Social | 2012-12-07 |
| Workflowgen | Online workflow and process management service | Enterprise | 2012-08-07 |
| WorldCat Search | Library data access | Reference | 2008-08-13 |
| Xtify | Android push notification service | Telephony | 2010-04-14 |
| Xurrency | Currency exchange rates | Financial | 2008-09-03 |
| YackTrack | Social media conversation tracking service | Social | 2012-05-18 |
| Yahoo Answers | Community driven reference service | Answers | 2006-08-16 |
| Yahoo Music | Music and musician info and videos | Music | 2008-08-04 |
| Yahoo Query Language | Query language platform for Yahoo services | Database | 2008-12-05 |
| Yahoo Traffic | Traffic data and routing | Transportation | 2005-11-19 |
| Yahoo Weather | Weather data service | Weather | 2009-12-04 |
| Yandex Blog Search | Blog search service | Search | 2011-02-22 |
| Yonda4 | Reading lists and recommendations | Recommendations | 2011-05-25 |
| York University Library | University library data service | Reference | 2012-11-08 |
| Your Mapper | Local Geodata For Your Apps | Mapping | 2009-08-21 |
| yourminis | Widget Platform | Widgets | 2007-04-03 |
| YouTube | Video sharing and search | Video | 2006-02-08 |
| ZetaPrints | Web-to-print and imaging service | Tools | 2012-06-18 |
| Zvents | Local events search and community | Events | 2006-02-14 |
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