Our API directory now includes 453 search APIs. The newest is the Automatton Instant Answers API. The most popular, in terms of mashups, is the eBay API. We list 220 eBay mashups. Below you'll find some more stats from the directory, including the entire list of search APIs.
In terms of the technical details, REST and XML lead the way. There are 319 search REST APIs and 68 search SOAP APIs. Our directory lists 290 search XML APIs and 219 search JSON APIs.
The most common tags within search are 49 reference search APIs, 34 social search APIs and 33 shopping search APIs.
On the mashup side, we list 1007 search mashups. We named YOUZEEK as mashup of the day on Sunday.
For reference, here is a list of all 453 search APIs.
11870 API: Spanish bookmarking and directory service
2GIS API: Russian Search Service
80legs API: Commercial web search services
AbeBooks API: Online books marketplace
AdGooroo API: Keyword search marketing Platform
Alan Bush Music Trust Compositions API: Musical compositions archive search
Amazon A9 OpenSearch API: Search services
American Bible Society BibleSearch API: Bible access and search service
Analytics SEO API: SEO optimization service
Appolicious API: Mobile application discovery service
Ark.com API: People search directory
art.sy API: Artwork information discovery service
ASC National Registry Search API: Search service for registered real estate appraisers
Ask AMEE API: Natural language query service
Ask Sponsored Listings API: Search engine marketing service
Audiobaba API: Music search and recommendation engine
Automatton Instant Answers API: Search engine
BackTweets API: Twitter link search service
Baidu API: Online marketing service
BeachGuard API: Beach information service
Best Buy BBYOpen Products API: eCommerce shopping services
Bibliotek API: Danish Library holdings database search
BibServer API: Bibliographic metadata consolidation and sharing service
Bing API: Online search services
Bing Maps Search API: Mapping search service
BioGRID API: Biological reference search service
BioLabeler API: Library of Medicine text extractor and indexing engine
BioLit API: Annotated biology article search
Biosemantics JANE API: Journal and author name service
Blekko API: Search engine
Blinkx API: Video search service
BlogCatalog API: Blog directory and community
Blogwise API: Blog and Feed search service
Boliven Publications API: Patent and scientific document Portal
Bountii Price Search API: Electronics and appliances price comparison service
Brickset API: Lego database lookup service
Brownbook OpenSearch API: Business directory service
buddyfetch API: Social network search engine
Buildasearch API: BuildaSearch Site Search Services
Bullseye Store Locator API: Store location search service
burrp API: Local business search service
Buzzzy API: Google Buzz Search Engine
BView API: Local vouchers and offers
Bview Local Search API: Local retail search service
Calais API: Semantic data search and extraction service
CareerOneStop API: U.S. Department of Labor career information service
Carsolize API: Travel booking service
cBio Cancer Genomics Data Server (CGDS) API: Cancer-related scientific information service
CEPT Retina API: Semantic fingerprinting service
Charity Navigator API: Search charity records
ChEBI API: Chemical entity search service
Cheeso's Looky Book Service API: Simple book search
ChEMBL API: Chemical compound search service
CICC gNova API: Chemical database search
CinemaTorrents API: Movie Torrent Search
CitedIn API: PubMed citation tracking service
CityGrid API: Local business directory search service
CLAIMS DIRECT API: Patent information service
ClearForest Semantic Web Services1 API: Natural language processing tools
Clipta API: Video Search
Collecta API: Real time search service
Compass: Business Data API: Business marketing database
Conferma Booking API: UK travel booking and reconciliation service
Copac API: Search UK libraries
Copyscape Premium API: Online plagarism search service
Coret Genealogy Online API: Dutch-language genealogy and family tree service
CrossRef DOI Resolver API: Persistent identifier resolver
Cruvee Social API: Social media search for wine industry
Cruvee Wine Search API: Wine industry search service
CSA/NBII Biocomplexity Thesaurus API: Biocomplexity Thesaurus search service
Cue API: Distributed personal information search
Culture Grid API: UK cultural institution collection information service
cXense API: IT and web development solutions
Cynapse Localscope API: Location based browsing application
Daleeli Mobile API: Saudi Arabian business directory
Data8 Companies House API: UK company search service
Datafiniti API: Search engine for data
Daum Search API: Search services
Daum Shopping API: Online shopping and product search service
deCarta MapSearch Engine API: Local search services
Deezer API: Music streaming service
Digital Podcast API: Podcast search
Digitalsmiths API: Video search and recommendation service
Directory Maximizer Directory Submissions API: SEO Link Building Service
DiscoverEDINA Tagger API: Image metadata service
Dolphin Dynamics API: Travel industry transaction processing service
DomainsBot API: Domain name suggestion service
Domus API: Estate Agent and Letting Management Service
Dooblet API: Alternatives discovery services
Drugle API: Pharmaceutical and medical search service
Duck Duck Go API: Internet search engine
EAST Search Engine API: Japanese address and ZIP code search service
EB-eye Search API: Lucene-based search services
eBay API: eBay Search service
eBay Best Match API: eBay search ranking analysis service
eBay Finding API: eBay Search service
eBay Product Services API: eBay product compatibility service
EBI CiteXplore API: Scientific publication and metadata retrieval
EBSCO Host API: Biomedical reference and research service
eCoComa Video API: Online video search service
ecofreek API: Search engine for free or swap items
ElderCare Locator API: Eldercare search service
Elsevier Article API: Scientific journals and articles search service
Empora Evergreen API: UK fashion search service
Eniro API: Nordic business search directory
Entireweb API: Web search service
EU Latitude API: Location Information Search Service
Europeana OpenSearch API: European museum collection metadata
Evature Travel Search API: Free text travel search query service
Everbread Haystack mini API: Online travel comparison service
EveryBlock API: Hyperlocal data and news aggregator
Evri API: Recommendations and semantic search service
EXACTME! API: Job recruitment search engine
Facetly API: E-commerce product search service
Factery API: Search engine and meaning extraction service
Family Tree Maker API: Genealogy search service
FamilySearch API: Genealogical search and family tree service
Fanggle QRazor API: Marketing and Advertising Service
FAROO API: Web search engine
Favatar API: Favicon retrieval service
Feinsearch API: U.S. employer identification number service
FilesTube API: Search engine for files
Fillbug API: Query by example service
Find That File API: File type search engine
Find Your MP- UK Parliament API: UK MP search tool
find2follow API: Twitter follower search
Fliqz API: Video search service
Fluidinfo API: Online storage and search platform for metadata
foursquare API: Social networking and city exploration
Freesound API: Music and sound search service
GBR Direct API: European business activity data service
geocubes API: Mapping search service
Gigablast API: Search service
Google AdWords API: Search advertising
Google Ajax Search API: Web search components
Google BigQuery API: Large dataset querying service
Google Book Search Book Viewability API: Book search
Google Books API: Book search services
Google Code Search API: Code search service
Google Commerce Search API: Online store and e-commerce product search service
Google Custom Search API: Google custom search management
Google Desktop API: Desktop search and gadgets
Google Patent Search API: Patent search service
Google Research Search API: Search services for researchers
Google Search API: Search services
Google Shopping Search API: Product search service
Grab A Great Deal API: Search capability service
Granicus Search API: Government agency search service
GrepCode API: Java code search service
Grocery Server API: Grocery search engine
GroupHigh API: Blog Search and Meta Data
Groups Near You API: Local groups search service
Hakia API: Semantic search engine
Hayoo! API: Haskell library search service
Helioid API: Web visual search service
Heystaks API: Social search and recommendation service
HMMER API: Protein sequence search and alignment service
HNSearch API: Hacker News search engine
Home Theater Backdrops API: Backdrop images and wallpapers
Homes.com Neighborhood Envoy API: Real estate profile and search service
HoundSleuth API: Document index and search engine service
Hub9 CloudSearch API: Cloud hosted search service
IceRocket Blog Search API: Real-time blog search service
IconFinder API: Graphic icon and image search
Idealista API: Spanish real estate portal
Idescat API: Population search
iHeartRadio API: Radio station search and player
ikiMap API: Create Maps From Public and Personal Georeference Information
IMSLP API: Public domain music score library
Inapub API: Pub search tool
indeed API: Job search services
IndexDen API: Full-text search service
IndexTank API: Realtime fulltext search
InfoNgen API: Content discovery and analysis service
Information Environment Service Registry API: Scholarly Resource discovery and syndication service
InsumaFocus API: Customizable German search engine
Intellexere API: Natural language search service
IODA Open API: Online Music Distribution Database
iPointer API: Mobile real estate information service
IQ Engines API: image recognition service
ISBN db API: Books database
isoHunt API: BitTorrent search engine
iTunes & App Store Search API: Apple product search
ITweetLive API: Twitter search and engagement service
JailBase API: Mugshot and Arrest Information for County Jails
Jawoco API: Web search engine
Jinni API: Movie discovery and search service
JobGizmo API: Job search tools
JournalTOCs API: Journal search service
Juju Publisher API: Job search engine
Justis API: U.K. legal document search service
JustJobs.ro API: Romanian job search site
Kariru Library Search API: Japanese library catalog consolidation service
Kayak API: Travel search service
KidsEatFor API: Restaurant deal search service
kikin EasySearch API: Embedded search service
KillerTours.com API: Band and Concert Search Tool
Kippt API: Bookmarking application
Koemei API: Video and audio file transcription service
kooaba Query API: Image recognition service
Kraft Recipe API: Online recipe service
Kratia API: Democratic search engine
LazyTune API: Music search services
LDSTech Gospel Library Catalog API: LDS catalog search service
LDSTech Mormon Channel API: Mormon radio querying service
LexisNexis Library Express API: Business publication search service
Lijit API: Trust network based search tool
Linkalope API: Twitter link search service
ListingWare API: Listings Search Service
LocalGuiding API: Local tour guide service
LocalSchoolDirectory API: School information and search service
LTU Engine/ON Demand API: Image matching and search
LyrDB API: Lyrics Database
Macroglossa API: Image comparison search engine
MaGdev BankSearch API: German bank information service
Magma API: Video directory and discovery service
MapQuest Nominatim Search API: Geographic search service
MapQuest Search API: Geographic search service
Markify API: Trademark registration search engine
MasterCard Merchant Identifier API: Merchant data lookup service
MatchCollege API: College search service
mBLAST mPACT API: Web content search service
MEDgle API: Clinical informatics platform
Medioh API: Video search service
Mesagraph API: Social TV content aggregator
Microsoft Bing API: Internet search
Microsoft Office Research API: Microsoft Office-based research service
Mimvi API: Mobile apps search engine
Mobile Phone Megastore API: Mobile phone product search service
Moodstocks API: Image recognition and search service
Moviepilot API: Movie search, information and recommendation service
MRS API: Biological and medical database search service
mSense API: Metadata generating service
Mugr API: Face recognition service
My School Holidays API: School holiday search service
myFeedz API: Blog services
NaCTeM Geniatagger API: Academic text mining service
Name Toolkit API: Domain name search and registration service
National Library of Australia Trove API: Library catalog search service
Naver API: Korean search engine
NCAR Digital Library API: Atmospheric science digital resource search service
ncRNA fRNAdb API: Functional RNA sequence search service
NCSU Scholarly Publications Repository API: Academic publication information service
Nestoria API: UK real estate listings
Network for Good Donation API: Online giving and donations service
New York Times Article Search API: New York Times article archives
New York Times Events API: Event listing service
New York Times Newswire API: All recent New York Times articles in summary
NewsIsFree API: Online news aggregation
Ningbo Institute of Technology SOIP API: Open API for Searching the NIT Information Portal
novoseek API: Biomedical search engine
NREL Building Component Library API: Architectural component information service
NutchWAX OpenSearch API: Search results sharing service
NYPL Digital Gallery API: Digital image service
Octopart Electronics API: Electronics parts search services
OCWSearch API: University course search service
Omgili API: Search service for user generated content
Onboard Informatics API: Real estate listings and search service
Onboard Lifestyle Search API: Real estate listings and search service
Onboard Points of Interest API: Real estate listings and search service
Onboard Property Search API: Real estate listings and search service
OneSearchAway API: Social search service
Ookaboo API: Creative Commons photo search service
Open Access Plagiarism Search API: Plagiarism detection service
Open Library API: Library data access
Open Patent Services API: European Patent Office web services
OReilly Safari API: Book search
Outside.in API: Hyperlocal news and information aggregator
Pays-Lecture API: French media library catalogue
Peachnote API: Music score search engine and analysis platform
Pearson dkimages API: Photo and image collection
Pearson Kitchen Manager API: Searchable recipe collection
Petfinder API: Petfinder Database Search API
Picitup API: Visual search service
Pingar API: Unstructured electronic data management service
Pipl API: People search engine
PlagScan API: Plagiarism detection service
Pocket Village API: Travel search and booking service
Pongr Image Recognition API: Image Recognition Service
Praized API: Local user reviews and search service
Praxeon API: Medical language search service
PRESTO Harvard Library API: University library search service
Publications NZ Book Cover API: Book cover image service
PubSub API: Blog and feed search
Q-Sensei FeedBooster API: Webfeed search service
Quintura Site Search API: Site search provider
Qwerly API: Social Web Search Engine
Qwiki API: Interactive wiki with media
Rainmaker API: Get Social Data for Email Contacts
Random House Insight API: Full text book search
Raven Tools API: Search engine optimization services
Raw Sugar API: Web directory service
refbase OpenSearch API: Bibliographic search service
RescueGroups API: Provides access to adoptable pet information from thousands of rescues and shelters in the US and Canada.
Researchr API: Scientific publication repository and research service
REVO API: Real estate listing and promotion platform
Revver API: Video services
Rome2rio API: Travel itinerary search service
Safe Creative API: Free copyright registry
SaleLocator API: Sales search engine
SalsaDev API: Semantic search and text analytics service
Sapo Auto Search API: Automobile search service
Sapo Tags API: Tag search service
SBA Loans and Grants Search API: Loans and grants search service
SBA Recommended Sites API: Link recommendation service
SchoolTube API: Video hosting/sharing service for schools
Science.gov API: Science information service
ScienceSeeker API: Science blog article aggregator
SearchBox API: Semantic Engine Service
SearchForecast Keywords API: Pay per click advertising keyword search and analysis
Searchify API: Hosted full-text search service
SearchUPC.com API: UPC Search with Barcode generator
SeatGeek API: Tickets search service
SeedPeer API: File sharing via BitTorrent
SeeqPod API: SeeqPod Music Discovery
Seevl API: Music discovery service
SemanticHacker API: Semantic discovery service
Sensebot API: Semantic search service
Sensis Business Search API: Australian business directory search service
SEOmoz API: Search engine optimization services
Sermon Browser API: Bible verse search service
Sholarometer API: Scholarly resource search service
ShopSense API: Online fashion search and shopping
ShopWiki API: Online shopping aggregation service
ShreveSearch Search API: Shreveport-Bossier LA area search services
Silo Breaker API: News and information service
Similar Sites API: Search API for Finding Similar Websites
SimpleGeek BlogXBrowsing API: Search service for simplegeek blog
Sindice API: Semantic data search and extraction service
Skyscanner API: Flight and travel search engine
sletoh.com API: Hotel price comparison service
Slug.ch API: Swiss blog search engine
SnappyFingers API: Question and answer search engine
SOCH API: Swedish cultural resource search service
Social Archive API: Status message search engine
Social Mention API: Aggregated social search service
Sogou Search Marketing API: Chinese search engine
Spiderline Site Search API: Domain specific site search service
Spinn3r API: Blog search index service
SplogSpot API: Database of spam blogs
Spock API: People search on the Web
Spotify Apps API: Music search and streaming service
Streamfinder API: Streaming radio station directory
StreetEasy API: New York Real Estate search and information
Stylight API: Fashion images and other services for shopping
Summize Twitter Search API: Search Twitter tweets service
SuperFish API: Visual search service
SureChem API: Chemical patent search engine
SureChemDirect API: Chemistry Patent Data
Surescripts Million Hearts Risk Check Locator API: Cardiovascular screening search
Swiftype API: Website search tool
Swoogle API: Semantic data search
Syndic8 API: News feed aggregation services
Systembolaget System API: Systembolaget Alcohol Database Access
T-ma-tic API: Semantic meaning and connections service
Tagoo API: Audio and video search engine
Tailrank API: Blog search and news aggregation service
Tapir API: Blog search service
Tariff Analysis Project API: Official utility tariff data service
Technorati API: Blog search services
TechSavvy API: Technology job listing site
Textpresso for Neuroscience API: Neuroscience literature search service
Tgels API: White-label airfare search and comparison service
ThrustCurve API: Model rocket motor data
Thumbplay API: Mobile. Music. Money. Sell digital media to over 200 million mobile phones from any application, widget or website.
Tiket API: Online ticket booking service
TinEye API: Reverse Image Search
Topics.io API: Online content aggregation service
Topsy API: Twitter search service
Touch Local API: Business locator and review service
Tracesmart API: UK people search service
Trail API: Outdoor Recreation Info
TravelFusion API: Travel Flight Booking API
Trellian Keyword Discovery API: Keyword search and discovery service
Trendspottr API: Social media trend monitoring and search service
TripSay API: Social travel search and recommendations service
True Knowledge API: General question and answers service
Tweet Archivist API: Twitter post archiving service
Tweet Scan API: Twitter and identi.ca search results service
tweethook API: Twitter search data retrieval
Tweettronics API: Brand monitoring and tracking service
Twicsy API: Twitter Picture Search
Twingly API: Blog Search Service
TwitterBrite API: Twitter search engine
uBio Namebank API: Animal scientific naming and search service
UC Davis Online Directory Search API: UC Davis online directory search service
Unofficial Newegg API: Computer and electronics online store search
UpName API: Domain name search engine
USASearch API: Government data
Vast API: Structured web search
VideoSurf API: Video search service
VinAudit API: Motor vehicle VIN information service
waldstat API: Location sharing service
Washington State Corporations Search API: Washington state corporations search service
WebLib HealthMash API: Medical semantic search engine
WebLib Polymeta API: Federated search service
WebReserv API: Online business search and booking service
Wego API: Travel search service
West Midlands Regional Observatory API: West Midlands public information search service
whatisonip.com API: Reverse IP Address Look Up
WhereIsNow API: self updating documents and contacts service provider
Whoozy Person Search API: Name search service
Wikia API: Search results enhancements and extensions
WikiLocation API: Find Wikipedia articles based on location
WikiSherpa API: Travel guides lookup service
Wink API: Social search service
Wolfram Alpha API: Computational knowledge and search engine
Wordpot API: Search engine optimization services
Wordsfinder Search Traffic Estimator API: Search traffic analysis service
Wordstream Keyword Niche Finder API: Keyword suggestion service
Wordstream Keyword Tool API: Keyword suggestion service
Wordtracker API: Search engine optimization services
World Addresses API: Address lookup and verification service
World Government Data API: A portal to government data sets
WorldCat Identities API: Library data access
WorldCat knowledge base API: E-resource discovery and linking service
Worldcat Registry API: Worldcat Registry access
WorldCat Search API: Library data access
wpSEEK API: WordPress search tool
XML ME Electronic Products Finder API: Electronic products search service
XML ME Sporting Goods Finder API: Sporting goods search service
XML ME Video Games Finder API: Video game search service
Yahoo Audio Search API: Music search services
Yahoo BOSS API: Customizable search service
Yahoo Image Search API: Image search services
Yahoo Kimo Knowledge Plus API: Question and answer service
Yahoo Local Search API: Local search service
Yahoo My Web Search API: Personalized search services
Yahoo Related Suggestions API: Search suggestion service
Yahoo Search API: Search services
Yahoo Shopping API: Shopping services
Yahoo Term Extraction API: Contextual search service
Yahoo Travel API: Online travel services
Yahoo Video Search API: Video search
Yamli API: Arabic search engine using Latin characters
Yandex API: Russian search engine
Yandex Blog Search API: Blog search service
Yandex Server API: Online full text search service
Yebol API: Semantic search engine
Yellow API: Canadian business listings service
YellowBot Reputation Management API: Local business search service
Yolink API: Semantic search
YouPage API: Business and local events directory
Yummly API: Semantic recipe search platform
Zemanta API: Blog authoring extension services
Zenbu API: New Zealand search and business directory service
Zipster API: Australian job search site
Zoombu Fly API: Travel search service
ZoomInfo API: Information search services
ZoomRank API: SEO rank monitoring service
