Web 2.0 API Directory
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Viewing 1 to 960 of 960 APIs
| API | Description | Category | Mashups | |
|---|---|---|---|---|
| Google Maps | Mapping services | Mapping | 1533 | |
| Flickr | Photo sharing service | Photos | 379 | |
| YouTube | Video sharing and search | Video | 315 | |
| Amazon eCommerce | Online retailer | Shopping | 260 | |
| Microsoft Virtual Earth | Mapping services | Mapping | 159 | |
| eBay | Online auction marketplace | Shopping | 146 | |
| Yahoo Maps | Mapping services | Mapping | 121 | |
| 411Sync | SMS, WAP, and email messaging | Messaging | 120 | |
| del.icio.us | Social bookmarking | Bookmarks | 118 | |
| Google Search | Search services | Search | 116 | |
| Yahoo Search | Search services | Search | 113 | |
| Community site | Community | 88 | ||
| Yahoo Geocoding | Geocoding services | Mapping | 82 | |
| Google Homepage | Portal gadgets | Widgets | 72 | |
| Last.fm | Music playlist management | Music | 68 | |
| Social networking service | Community | 62 | ||
| Technorati | Blog search services | Blog Search | 60 | |
| Google Ajax Search | Web search components | Search | 58 | |
| Yahoo Image Search | Image search services | Search | 45 | |
| GeoNames | Geographic name and postal code lookup | Mapping | 44 | |
| Yahoo Local Search | Local search service | Search | 40 | |
| Amazon S3 | Online storage services | Storage | 39 | |
| Shopping.com | Online retail shopping | Shopping | 37 | |
| Amazon EC2 | Elastic Compute Cloud virtual hosting | Internet | 36 | |
| Google AdSense | Advertising management | Advertising | 36 | |
| Digg | Community driven news links and ratings | News | 35 | |
| Google Base | Platform for structure and semi-structured data | Shopping | 33 | |
| Upcoming.org | Collaborative event calendar | Events | 29 | |
| Google Calendar | Calendar service | Calendar | 28 | |
| Eventful | Events discovery and demand | Events | 27 | |
| FeedBurner | Blog promotion tracking service | Blogging | 27 | |
| Windows Live Search | Internet search | Search | 27 | |
| Yahoo Term Extraction | Contextual search service | Search | 27 | |
| geocoder | Geocoding services for US | Mapping | 24 | |
| imageLoop | Animated slideshow service | Photos | 24 | |
| Google Ajax Feeds | Access RSS and Atom feeds with JavaScript | Feeds | 23 | |
| Skype | Internet communication | Telephony | 23 | |
| AOL Video | AOL Truveo Video Search | Video | 22 | |
| BBC | Multimedia archive database | Media Management | 20 | |
| Google AdWords | Search advertising | Advertising | 20 | |
| Google Chart | Chart creation service | Other | 20 | |
| Trynt | Term extraction service | Other | 20 | |
| Yahoo Video Search | Video search | Video | 19 | |
| MSN Messenger | Chat and messaging | Chat | 17 | |
| Yahoo Traffic | Traffic data and routing | Other | 17 | |
| Blogger | Blogging services | Blogging | 16 | |
| Salesforce.com | CRM services | Enterprise | 16 | |
| Yahoo Answers | Community driven reference service | Reference | 16 | |
| Yahoo Shopping | Shopping services | Shopping | 16 | |
| Commission Junction | Online affiliate programs | Shopping | 15 | |
| Google Custom Search | Google custom search management | Search | 15 | |
| hostip.info | IP lookup | Internet | 15 | |
| Netvibes | Personalized home page with widgets | Widgets | 15 | |
| Rhapsody | Online music services | Music | 15 | |
| Zillow | Real estate pricing and valuations | Real Estate | 15 | |
| Google Desktop | Desktop search and gadgets | Search | 13 | |
| WeatherBug | Weather forecast services | Weather | 13 | |
| ClearForest Semantic Web Services1 | Natural language processing tools | News | 12 | |
| Multimap | Global online mapping service | Mapping | 12 | |
| Panoramio | photo upload site with organizer and geolocation | Photos | 12 | |
| Basecamp | Project collaboration service | Project Management | 11 | |
| Google Picasa | Photo management and sharing service | Photos | 11 | |
| HotOrNot | Dating rating site | Dating | 11 | |
| Lyricsfly | Song lyrics search engine | Music | 11 | |
| PayPal | Online payments | Payment | 11 | |
| SeeqPod | SeeqPod Music Discovery | Music | 11 | |
| Yahoo Widgets | Desktop widgets | Widgets | 11 | |
| Amazon A9 OpenSearch | Search services | Search | 10 | |
| Google Mashup Editor | Mashup creation tool extensions API | Tools | 10 | |
| indeed | Job search services | Job Search | 10 | |
| Jaiku | Social messaging service | Messaging | 10 | |
| Yahoo Map Image | Map image creation service | Mapping | 10 | |
| Zvents | Local events search and community | Events | 10 | |
| AOL Instant Messenger | Instant messaging chat service | Chat | 9 | |
| CNET | Shopping services | Shopping | 9 | |
| Dapper | Service for API creation | Internet | 9 | |
| Business social networking platform | Community | 9 | ||
| Vast | Structured web search | Search | 9 | |
| Yahoo Related Suggestions | Search suggestion service | Search | 9 | |
| Yelp | Local user reviews and city guides | Recommendations | 9 | |
| FedEx | Package shipping | Shipping | 8 | |
| FriendFeed | Activity stream aggregator | Other | 8 | |
| Kayak | Travel search service | Travel | 8 | |
| MusicBrainz | Music metadata community service | Music | 8 | |
| NOAA Weather Service | Weather forecast database | Weather | 8 | |
| Weather Channel | Weather forecast data | Weather | 8 | |
| Zazzle | On-demand product creation service | Shopping | 8 | |
| BigTribe | Location based advertising | Mapping | 7 | |
| Findory | Personalized news aggregation | News | 7 | |
| geocoder.ca | Geocoding services for Canada | Mapping | 7 | |
| Google Spreadsheets | Online spreadsheets | Office | 7 | |
| Google Talk | Chat application | Chat | 7 | |
| Jaduka | Internet and PSTN voice services | Telephony | 7 | |
| Microsoft MapPoint | Mapping services | Mapping | 7 | |
| MySpace | Social networking service | Community | 7 | |
| Poly9 FreeEarth | 3D mapping service | Mapping | 7 | |
| Pownce | Social networking and micro-blogging service | Community | 7 | |
| Revver | Video services | Video | 7 | |
| SecondLife | Virtual world | Other | 7 | |
| Trulia | Real estate search | Real Estate | 7 | |
| Tumblr | Web scrapbook post and view service | Community | 7 | |
| Yahoo My Web Search | Personalized search services | Search | 7 | |
| Yahoo Travel | Online travel services | Travel | 7 | |
| 23 | Photo sharing service | Photos | 6 | |
| Alexa Web Information Service | Web site information and traffic data | Search | 6 | |
| Alexa Web Search | Web Search Engine | Search | 6 | |
| Amazon Mechanical Turk | Request services of humans | Other | 6 | |
| Daylife | Online News Service | News | 6 | |
| Google Checkout | Shopping cart services | Shopping | 6 | |
| Grouper Video | Video sharing service | Media Management | 6 | |
| Ma.gnolia | Social bookmarking service | Bookmarks | 6 | |
| Ontok | Geocode any US address | Mapping | 6 | |
| RapLeaf | Portable reputation system | Community | 6 | |
| SharedBook | On-demand reverse publishing system | Other | 6 | |
| Sunlight Labs | US Congress database service | Government | 6 | |
| UPS | Package shipping | Shipping | 6 | |
| UrbanDictionary | Slang dictionary lookup | Reference | 6 | |
| Yahoo BOSS | Customizable search service | Search | 6 | |
| Adobe on AIR Bus Tour | Services to track Adobe AIR product launch | Other | 5 | |
| Bloglines | Online feed aggregator | Feeds | 5 | |
| Cafe Press | Customized retail product service | Shopping | 5 | |
| Fire Eagle | Geo location sharing service | Mapping | 5 | |
| FUTEF Wikipedia API | Third party Wikipedia web service | Reference | 5 | |
| Map24 AJAX API | Mapping services | Mapping | 5 | |
| MapQuest | Online mapping service | Mapping | 5 | |
| OpenLayers | Mapping API abstraction layer | Mapping | 5 | |
| Photobucket | Online photo sharing service | Photos | 5 | |
| Riya | Photo search | Photos | 5 | |
| Shopzilla | Comparison shopping service | Shopping | 5 | |
| Smugmug | Photo sharing service | Photos | 5 | |
| US Postal Service | Package shipping and postage | Shipping | 5 | |
| Veoh | Internet television, video, and social platform | Video | 5 | |
| Windows Live Contacts Control | Contacts control | PIM | 5 | |
| Windows Live Expo | Online classifieds service | Shopping | 5 | |
| Yahoo Audio Search | Music search services | Media Search | 5 | |
| 30 Boxes | Calendar service | Calendar | 4 | |
| 43Things | Social goal setting | Other | 4 | |
| Alexa Top Sites | Web site traffic rankings | Internet | 4 | |
| Backpack | Online information manager | Office | 4 | |
| Clickatell | SMS Messaging services | Messaging | 4 | |
| Compete | Internet web site metrics and analytics | Internet | 4 | |
| Dipity | Interactive timeline creation services | Photos | 4 | |
| Follow The Money | Database of US campaign contributions | Government | 4 | |
| Fotolia | Royalty free stock photos | Photos | 4 | |
| Freebase | Community driven open database | Database | 4 | |
| Google AJAX Language | Text translation service | Other | 4 | |
| Google Translate | Language translation service | Utility | 4 | |
| Lat49 | Geo-targeted advertising for online maps | Advertising | 4 | |
| LiveVideo | Video repository and user community | Video | 4 | |
| LyricWiki | Song lyrics search engine | Music | 4 | |
| Microsoft Silverlight Streaming | Streaming application management service | Other | 4 | |
| MyBlogLog | Social footprint sharing service | Community | 4 | |
| MyVox | Phone to web media voice services | Telephony | 4 | |
| Naver | Korean search engine | Search | 4 | |
| NewsGator | Feed aggregation | Feeds | 4 | |
| PriceRunner | Shopping comparision engine | Shopping | 4 | |
| Raw Sugar | Web directory service | Other | 4 | |
| SlideShare | Presentation sharing community | Office | 4 | |
| SNOCAP | Digital music marketplace | Music | 4 | |
| Twittervision | Location based data for the Twitter service | Messaging | 4 | |
| Userplane | Communication software for online communities | Messaging | 4 | |
| Windows Live Gadgets | Online gadgets service | Widgets | 4 | |
| Windows Live Spaces | Blog services | Blogging | 4 | |
| Yahoo Ads | Online ad management | Advertising | 4 | |
| Yahoo Mail | Web based email system | 4 | ||
| ZeeMaps | Embedded maps and international geocoding | Mapping | 4 | |
| aideRSS | RSS feed management and filtering service | Feeds | 3 | |
| Amazon SimpleDB | Online database service | Database | 3 | |
| AOL Open Auth | Authentication services | Security | 3 | |
| Aonaware Dictionary | Dictionary lookup service | Reference | 3 | |
| Authorize.Net | Internet based payment gateway services | Shopping | 3 | |
| Blinksale | Online invoicing services | Financial | 3 | |
| Box.net | Online file storage | Storage | 3 | |
| BT Web21C | Communications services APIs | Telephony | 3 | |
| COLOURlovers | Named colors and color palette services | Tools | 3 | |
| DataUnison eBay Research | eBay pricing and sales trend data | Shopping | 3 | |
| Digital Podcast | Podcast search | Music | 3 | |
| ESV Bible Lookup | Bible lookup service | Reference | 3 | |
| FormSpring | Online forms service | Internet | 3 | |
| GeoIQ | Geospatial analysis and heat mapping service | Mapping | 3 | |
| Google Documents List | Document management services | Office | 3 | |
| Google Maps Flash | Flash-based mapping service | Mapping | 3 | |
| Google Static Maps | Simple online mapping service | Mapping | 3 | |
| LinkShare | Affiliate marketing network | Shopping | 3 | |
| Moreover | News delivery | News | 3 | |
| NASA | Satellite mapping images | Mapping | 3 | |
| NCBI Entrez | Life sciences search services | Medical | 3 | |
| Nestoria | UK real estate listings | Real Estate | 3 | |
| NewsCloud | Social news service | News | 3 | |
| Ning | Service creation playground | Other | 3 | |
| Oodle | Online classifieds service | Shopping | 3 | |
| openDada | Social music service | Music | 3 | |
| Plaxo | Address book management | Enterprise | 3 | |
| Shadows | Social bookmarking and community | Bookmarks | 3 | |
| SoundCloud | SoundCloud is a music and audio platform for the web | Music | 3 | |
| SplogSpot | Database of spam blogs | Blog Search | 3 | |
| SpringWidgets | Widget platform | Widgets | 3 | |
| Syndic8 | News feed aggregation services | Feeds | 3 | |
| WebAIM | Web based instant messaging | Chat | 3 | |
| Weblogs | Blog ping service | Blogging | 3 | |
| WebShots | Photo sharing service | Photos | 3 | |
| WebThumb | Thumbnail image generation service | Internet | 3 | |
| Widgetbox | Create and distribute your widget through the world's largest widget gallery | Widgets | 3 | |
| Windows Sidebar Gadgets | Desktop gadgets | Widgets | 3 | |
| Yahoo BBauth | Browser based authentication service | Security | 3 | |
| Yahoo Internet Location Platform | Spatial interoperability and geographic discovery | Mapping | 3 | |
| Yahoo Site Explorer | Web site analysis service | Internet | 3 | |
| Adobe Share | Service for publishing and sharing documents | Storage | 2 | |
| Alexa Site Thumbnail | Thumbnail images of web site home pages | Internet | 2 | |
| Amazon Flexible Payments Service | eCommerce payments service | Payment | 2 | |
| Amazon Queue Service | Internet-based queuing service | Other | 2 | |
| AOL Open Mail | Email services | 2 | ||
| bLaugh Comics | Online comic strip | Other | 2 | |
| Blip.tv | Video upload and sharing service | Video | 2 | |
| Blue Dot | Content sharing community | Bookmarks | 2 | |
| CrunchBase | Directory of companies, people, and investors | Reference | 2 | |
| DBpedia | Structured query interface to Wikipedia | Wiki | 2 | |
| Democracy In Action | eAdvocacy services for nonprofits | Government | 2 | |
| Echo Nest | Music services for professionals | Music | 2 | |
| EditGrid | Online spreadsheet | Office | 2 | |
| Evoca | Phone to web media voice services | Telephony | 2 | |
| Garmin MotionBased | GPS services and mapping | Mapping | 2 | |
| Gigablast | Search service | Search | 2 | |
| GlobeXplorer | Mapping services | Mapping | 2 | |
| Google Apps Email Migration | Migrate existing email systems to Google Apps | 2 | ||
| Google Client Authentication | Account authentication for installed applications | Security | 2 | |
| Google Code Search | Code search service | Search | 2 | |
| Google Notebook | Online notebook service | Utility | 2 | |
| Google Single SignOn | Authentication for Google Apps | Security | 2 | |
| Google Social Graph | Search service for finding social connections | Community | 2 | |
| Google Web Authentication | Account authentication proxy for web-based applications | Security | 2 | |
| Gruvr | Live music and concert information | Music | 2 | |
| hon.jp | Japanese eBook metadata service | Catalog | 2 | |
| iGoogle Themes | Google homepage design service | Other | 2 | |
| InnerGears Weather by City | US Weather forecasts by city | Weather | 2 | |
| Internet Archive | Non-profit Internet library | Internet | 2 | |
| Kuler | Adobe web service for creating color themes | Other | 2 | |
| LibraryThing | Books database and community | Reference | 2 | |
| LiveJournal | Blogging software | Blogging | 2 | |
| Maplight | Government database linking contributions and votes | Government | 2 | |
| Microsoft start.com | Portal service | Widgets | 2 | |
| MindTouch Deki Wiki | Wiki platform service | Wiki | 2 | |
| Mobivity | SMS marketing messaging service | Messaging | 2 | |
| MusicMobs | Social music service | Music | 2 | |
| Myplaylist | Photo slideshow for music services | Music | 2 | |
| Omnidrive | Online storage services | Storage | 2 | |
| Ontok Wikipedia | Encyclopedia data access | Wiki | 2 | |
| OpenStreetMap | The Free Wiki World Map | Mapping | 2 | |
| Ordnance Survey OpenSpace | Online mapping service | Mapping | 2 | |
| Pageflakes | Personalized start page and widgets | Widgets | 2 | |
| PhishTank | Community site for tracking phishing | Security | 2 | |
| Pingdom | Web site monitoring and reporting services | Internet | 2 | |
| Plazes | Location discovery service | Mapping | 2 | |
| Reuters Spotlight | Reuters.com content service | News | 2 | |
| SimpleAPI | Web site thumbnail image creation | Internet | 2 | |
| Snipshot | Online photo editing service | Photos | 2 | |
| Sparklines | Graph generation service | Other | 2 | |
| SpokenBuzz | Voice services portal | Telephony | 2 | |
| StrikeIron Global SMS Pro | SMS messaging services | Messaging | 2 | |
| StrikeIron Super Data Pack | APIs for variety of reference data sources | Reference | 2 | |
| StrikeIron US Census | Census data information service | Reference | 2 | |
| Summize Twitter Search | Search Twitter tweets service | Messaging | 2 | |
| TagTooga | Tag based Internet directory | Tagging | 2 | |
| Tailrank | Blog search and news aggregation service | Blog Search | 2 | |
| Topicalizer | Document analysis service | Other | 2 | |
| TypePad | Blog management | Blogging | 2 | |
| We Feel Fine | Art project that harvests feelings from blogs | Other | 2 | |
| WHERE GPS | Mobile GPS widget platform | Mapping | 2 | |
| Windows Live Contacts | Contacts database | PIM | 2 | |
| Windows Live Data | Service for users to control data access | Security | 2 | |
| Yahoo Messenger | Instant messaging | Chat | 2 | |
| Yahoo Music Engine | Desktop music player | Music | 2 | |
| YouTXT | SMS text messaging service | Messaging | 2 | |
| 12seconds.tv | 12-second videoblogging | Video | 1 | |
| Aevum Obscurum | Online multiplayer strategy game | Games | 1 | |
| AIM Phoneline | Voice Over IP Internet telephony services | Telephony | 1 | |
| AMEE | Avoiding Mass Extinctions Engine - CO2 calculations | Other | 1 | |
| ArcWeb | Mapping and GIS services | Mapping | 1 | |
| Arkayne | Content linking widget based on post similarity | Recommendations | 1 | |
| Autodesk Freewheel | CAD model viewing, printing and collaboration | Other | 1 | |
| BeenVerified | Authentication services | Security | 1 | |
| Blip.fm | Social music service | Music | 1 | |
| BookMooch | Books exchange service | Other | 1 | |
| Brightkite | Location sharing service | Community | 1 | |
| Broadsoft Xtended | VoIP telephony services | Telephony | 1 | |
| buySAFE | E-commerce trust network | Security | 1 | |
| Buzznet | Photo sharing | Photos | 1 | |
| Calais | Semantic data search and extraction service | Tagging | 1 | |
| City and State by Zip Code | Address lookup service | Reference | 1 | |
| Clicky | Web site analytics | Internet | 1 | |
| Creative Commons | Licensing engine integration | Other | 1 | |
| DabbleDB | Online database service | Database | 1 | |
| deCarta | Location-based services | Mapping | 1 | |
| DHL | Package shipping services | Shipping | 1 | |
| Dun and Bradstreet Credit Check | Credit quick check web service | Financial | 1 | |
| EarthTools | Web services for geographical information | Mapping | 1 | |
| EasyUtil | Recommendation service | Recommendations | 1 | |
| eSideWalk | Community networking site | Other | 1 | |
| ExactTarget | Email delivery services | 1 | ||
| FedSpending.org | Database of US government spending | Government | 1 | |
| FeedMap | Blog geo-coding | Mapping | 1 | |
| FreeYourID | Online identity authentication services | Internet | 1 | |
| FreshBooks | Online invoicing and time tracking | Financial | 1 | |
| GetMapping | Aerial photography and mapping service | Mapping | 1 | |
| Google AJAX Libraries | Content distribution network for AJAX libraries | Internet | 1 | |
| Google Book Search Book Viewability | Book search | Search | 1 | |
| Google Contacts | Contact list management | Other | 1 | |
| Google Earth | Mapping and 3D geo visualization | Mapping | 1 | |
| Google Gears | Tools for offline browser extensions | Other | 1 | |
| Google Health | Health data service | Medical | 1 | |
| Google Safe Browsing | Security service to verify URLs | Security | 1 | |
| Google Visualization | Display and visualization of structured data | Other | 1 | |
| Harvest | Project time tracking and tasks | Project Management | 1 | |
| Highrise | Online contact manager and CRM | Enterprise | 1 | |
| Holidays Service | Holiday dates lookup service | Reference | 1 | |
| HotelsCombined | Hotel comparison search service | Travel | 1 | |
| identi.ca | Microblogging service | Blogging | 1 | |
| Imeem | Social networking and media service | Community | 1 | |
| Interfax | Fax services | Fax | 1 | |
| JamBase | Live music and concert information | Music | 1 | |
| Jots | Social bookmarking | Bookmarks | 1 | |
| JotSpot | Wiki-style collaboration tools | Wiki | 1 | |
| Library of Congress SRW | Information database search | Reference | 1 | |
| Lingr | Online chatroom services | Chat | 1 | |
| Living Stones | Bible lookup service | Other | 1 | |
| Lulu Publishing | Programmatically publish books | Other | 1 | |
| Macromedia News Aggregator | Data access service | News | 1 | |
| MailChimp | Email List & Campaign management service | 1 | ||
| Mapstraction | Mapping API abstraction layer | Mapping | 1 | |
| MaxMind GeoIP | IP address lookup services | Mapping | 1 | |
| Medioh | Video search service | Video | 1 | |
| MetaCarta | Location and geotagging services | Mapping | 1 | |
| Microsoft MSDN | Technical reference library | Reference | 1 | |
| MTV | MTVN Content API | Video | 1 | |
| NCAA Mens College Basketball | NCAA college basketball data services | Sports | 1 | |
| NewsIsFree | Online news aggregation | News | 1 | |
| NPR | US National Public Radio | Other | 1 | |
| Open Patent Services | European Patent Office web services | Government | 1 | |
| OpenDOAR | Academic research repository | Reference | 1 | |
| OpenSecrets | U.S. political data lookup | Government | 1 | |
| OpenSocial | Common APIs for building social applications | Community | 1 | |
| OpenStrands | Music recommendation and discovery | Music | 1 | |
| Orb | Digital media remote access and management | Media Management | 1 | |
| Orkut | Social network from Google | Community | 1 | |
| PeekaCity | Location-based services | Mapping | 1 | |
| Pixagogo | Online photo services | Photos | 1 | |
| PriceGrabber | Comparison shopping service | Shopping | 1 | |
| Prodigem | File sharing via BitTorrent | File Sharing | 1 | |
| Prosper | Peer-to-peer lending network | Financial | 1 | |
| PubSub | Blog and feed search | Blog Search | 1 | |
| Pushpin | Mapping service | Mapping | 1 | |
| Pushpin Location Data | Location and statistical information about places | Mapping | 1 | |
| QuarkRank | Consumer reviews service | Shopping | 1 | |
| Rakuten | Japanese shopping web service | Shopping | 1 | |
| Rentometer | Realestate pricing services | Real Estate | 1 | |
| Ribbit | Flash based VoIP service | Telephony | 1 | |
| Rrove | Social Bookmarking for Places Create & Share Maps | Bookmarks | 1 | |
| Scribd | Document viewer and handling service | Office | 1 | |
| Scribd iPaper | Document embedding service | Office | 1 | |
| ShutterPoint | Stock photography service | Photos | 1 | |
| Simpy | Social bookmarking | Bookmarks | 1 | |
| Skyhook Wireless | Wifi positioning services | Other | 1 | |
| SmashFly | Job board posting service | Job Search | 1 | |
| Social Actions | Volunteer and charity opportunities services | Other | 1 | |
| stikkit | Little sticky notes that think | Utility | 1 | |
| StrikeIron | API marketplace services | Other | 1 | |
| StrikeIron Reverse Phone Lookup | Reverse phone lookup services | Reference | 1 | |
| StrikeIron Tax Service | Sales tax reference lookup | Other | 1 | |
| Swivel | Business data visualization and analysis | Financial | 1 | |
| Textamerica | Moblogs | Messaging | 1 | |
| TheyWorkForYou | Track the UK Parliament | Government | 1 | |
| Thumbalizr | Thumbnail images of websites service | Photos | 1 | |
| Tinylink | URL shortening service | Internet | 1 | |
| TradeSports | Online sports betting exchange | Other | 1 | |
| Trendrr | Graphing trends service | News | 1 | |
| TringMe | VoIP telephony services | Telephony | 1 | |
| Tunelog | Music metadata management | Music | 1 | |
| Tutorials Garden | Online tutorials service | Other | 1 | |
| TypeKey | Authentication Framework | Security | 1 | |
| UPC Database | UPC lookup service | Shopping | 1 | |
| US Yellow Pages | US yellow pages telephone directory | Reference | 1 | |
| USGS Elevation Query Service | Determine elevation based on latitude and longitude | Mapping | 1 | |
| ViaMichelin | Mapping, directions, and travel booking services | Mapping | 1 | |
| Vimeo | Video sharing service | Video | 1 | |
| WebPurify | Profanity filtering service | Tools | 1 | |
| Where2GetIt SlippyMap | Online mapping service | Mapping | 1 | |
| Whereis | Australian and New Zealand mapping service | Mapping | 1 | |
| WhitePages.com | People search service | Reference | 1 | |
| Wigle | Wireless network mapping | Mapping | 1 | |
| Windows Live Admin Center | Web site administration services | Internet | 1 | |
| Windows Live ID Web Authentication | Web based authentication service | Security | 1 | |
| Windows Live Spaces Photo Control | Programmable widget for blog photos | Photos | 1 | |
| World Time Engine | World clock and time zone service | Utility | 1 | |
| Yahoo Live | Live video streaming service | Video | 1 | |
| Yahoo Music | Music and musician info and videos | Music | 1 | |
| Yahoo Search Marketing | Search advertising platform | Advertising | 1 | |
| yourminis | Widget Platform | Widgets | 1 | |
| Zixxo | Online coupons | Shopping | 1 | |
| Zoho | Online office suite | Office | 1 | |
| ZoomIn | New Zealand mapping service | Mapping | 1 | |
| ZoomInfo | Information search services | Reference | 1 | |
| 3Jam | Reply-all text messaging service | Messaging | 0 | |
| 43 Places | Social travel goals | Community | 0 | |
| 88 Miles | Project time tracking services | Project Management | 0 | |
| A.nnotate | PDF, Word, or Web annotation service | Office | 0 | |
| Abbreviations | Abbreviated words services | Reference | 0 | |
| Activ Financial | Financial market data services | Enterprise | 0 | |
| activeRenderer | Outline publishing for Radio UserLand | Other | 0 | |
| AES WebLink | Shipment submission and inquiry services | Government | 0 | |
| AgentFactor Travel | Travel booking service | Travel | 0 | |
| AgentRank | Real estate agent sales, forecasts, and reviews | Real Estate | 0 | |
| Akismet | Blog spam prevention service | Blogging | 0 | |
| Allegro | Online auction marketplace | Auctions | 0 | |
| Amazon DevPay License Service | Amazon web services licensing | Financial | 0 | |
| Amazon Fulfillment Web Service | eCommerce fullfillment service | Shopping | 0 | |
| Amazon Historical Pricing | Historical product sales data | Shopping | 0 | |
| AmeriTrade | Stock trading and data services | Financial | 0 | |
| Amnesty International | Database of censored sites and data | Other | 0 | |
| AmphetaRate | News aggregator | News | 0 | |
| Answerbag | Questions and answers service | Answers | 0 | |
| AOL Journals | Blogging platform | Blogging | 0 | |
| AOL Pictures | Online photo management | Photos | 0 | |
| AOL Presence | Online presence service | Chat | 0 | |
| AOL Video Upload | Video upload and sharing service | Video | 0 | |
| Approver | Services for document approval and review | Other | 0 | |
| aql | SMS solutions portal | Messaging | 0 | |
| aql vCard | Business card generator services | Enterprise | 0 | |
| Are You Watching This | Algorithms identify in-progress, exciting sporting events | Sports | 0 | |
| Aria | CRM and other business applications | Enterprise | 0 | |
| arXiv | Academic research repository | Reference | 0 | |
| Aspect Search | Hosted search services | Search | 0 | |
| Assembla | Online project collaboration service | Project Management | 0 | |
| Australian Business Number Lookup | Australian business number refernece service | Government | 0 | |
| Authentic Jobs | Job search services for developers and designers | Job Search | 0 | |
| AvantLink | Affiliate marketing network | Shopping | 0 | |
| Baby Names | International baby naming services | Other | 0 | |
| BankVal International | IBAN and SWIFT validation services | Financial | 0 | |
| BankVal UK | Bank and card validation services | Financial | 0 | |
| Baynote | Recommendations service | Recommendations | 0 | |
| Bebo | Social network | Community | 0 | |
| Beer Mapping | Brewery data and mapping services | Food | 0 | |
| Betfair | Online betting exchange | Other | 0 | |
| Bible Gateway | Bible lookup services | Other | 0 | |
| Bible Lookup | Bible lookup service | Other | 0 | |
| BibSonomy | Social bookmarking | Bookmarks | 0 | |
| Big Contacts | Web based contact management | Office | 0 | |
| Big Huge Thesaurus | Thesaurus lookup services | Reference | 0 | |
| Bit.ly | URL shortening service | Internet | 0 | |
| Blinkx | Video search service | Video | 0 | |
| Blogmarks | Social bookmarking | Bookmarks | 0 | |
| Blogwise | Blog and feed search service | Blog Search | 0 | |
| Boldchat | Online chatroom services | Chat | 0 | |
| Boo-box | Recommendation service | Recommendations | 0 | |
| Bountii Price Search | Electronics and appliances price comparison service | Shopping | 0 | |
| Bunchball | Multiplayer game platform | Games | 0 | |
| Buxfer | Personal finance service | Financial | 0 | |
| BuzzGame | Search based game | Games | 0 | |
| CafeSpot | Social guide to cafes | Other | 0 | |
| Callfire Hosted Call Center | Call center agent service | Telephony | 0 | |
| Callfire Voice Broadcast | Phone campaign service | Telephony | 0 | |
| Cambrian House | Crowdsourcing service | Community | 0 | |
| Campaign Monitor | Email List and Campaign management service | 0 | ||
| Carma | Carbon emissions data | Database | 0 | |
| CatalogWS | Academic library | Reference | 0 | |
| Cdyne | Data delivery services | Other | 0 | |
| Cdyne Notify | Create voice messages from text | Other | 0 | |
| Cellblock | Real-time Multimedia File Sharing | Media Management | 0 | |
| CellTrust | SMS messaging | Messaging | 0 | |
| Cicero | Address-based Lookup Service for Elected Officials | Government | 0 | |
| Civic Footprint | Political geography lookup for Illinois | Government | 0 | |
| Clearspring | Widget creation, distribution, and tracking services | Widgets | 0 | |
| CleverSet | Recommendations service for eCommerce sites | Recommendations | 0 | |