Full WEB 2.0 API List

Advertising

Google AdSense
Advertising management

Google AdWords
Search advertising

Microsoft adCenter
Online advertising services

UrlTrends
Link tracking and search optimization

Wordtracker
Search engine optimization services

Yahoo Ads
Online ad management

Yahoo Search Marketing
Search advertising platform

Answerbag
Questions and answers service

Blogwise
Blog and feed search service

SplogSpot
Database of spam blogs

Blog Search

Blogwise
Blog and feed search service

SplogSpot
Database of spam blogs

Tailrank
Blog search and news aggregation service

Technorati
Blog search services

Blogging

Akismet
Blog spam prevention service

Blogger
Blogging services

FeedBlitz
Blogs by email service

FeedBurner
Blog promotion tracking service

LiveJournal
Blogging software

Performancing
Blog management

TypePad
Blog management

Weblogs
Blog ping service

Windows Live Spaces
Blog services

Bookmarks

Blogmarks
Social bookmarking

del.icio.us
Social bookmarking

linkaGoGo
Social bookmarking service

Ma.gnolia
Social bookmarking service

OnlyWire
Social bookmarklet service

Shadows
Social bookmarking and community

Simpy
Social bookmarking

Calendar

30 Boxes
Calendar service

Google Calendar
Calendar service

Spongecell
Online calendar service

Chat

AOL Instant Messenger
Instant messaging chat service

AOL Presence
Online presence service

Google Talk
Chat application

IMified
Instant messenger buddy

Lingr
Online chatroom services

MSN Messenger
Chat and messaging

WebAIM
Web based instant messaging

Yahoo Messenger
Instant messaging

Community

Blue Dot
Content sharing community

coRank
Distributed user reviews service

Facebook
Social networking service

PartySpark
Social events service

RockYou Super Wall
Content sharing platform within Facebook

Twitter
Community site

Email

Email Address Validator
Email address validation service

ExactTarget
Email delivery services

IntelliContact
Email marketing service

JangoMail
Bulk email service

Mailbuild
Email forms and templates service

Publicaster
Email marketing management

StrikeIron Email Verification
Email verification service

Vertical Response
Email management services

Webmail.us
Email hosting service

WhatCounts
Email management services

Yahoo Mail
Web based email system

Enterprise

Employease
On-demand human resource management

Google Provisioning
User provisioning for Google Applications

Lokad
Time series forecaster

NetDocuments
Enterprise document management service

NetSuite
Business application suite

Salesforce.com
CRM services

WebEx
Conferencing and collaboration services

Events

Eventfinder
Events calendar

Eventful
Events discovery and demand

Spraci
Events and clubs database

Upcoming.org
Collaborative event calendar

Zvents
Local events search and community

Financial

Blinksale
Online invoicing services

Currency Rates
Currency rates

Dun and Bradstreet Credit Check
Credit check

FreshBooks
Online invoicing and time tracking

KashFlow
Online accounting software

Moneytrackin
Expense tracking

NetAccounts
Online accounting service

Prosper
Peer-to-peer network

StrikeIron Historical Stock Quotes
Stock price quotes for US equities

StrikeIron Mutual Funds
Historical mutual funds

StrikeIron Stock Quotes Basic
Real-time stock quotes

Wesabe
Personal finance management and community

Government

Cicero
Lookup service for US elected officials by address

Civic Footprint
Political geography lookup for Illinois

Democracy In Action
Advocacy services for nonprofits

FedSpending.org
Database of US government spending

Follow The Money
Database of US campaign contributions

GovTracker
Rhode Island state data services

LOUIS
US federal documents database

Open Patent Services
European Patent Office web services

Sunlight Labs
US Congress database service

TheyWorkForYou
Track the UK Parliament

Who is my Representative
Database of US congressional representatives

Internet

Alexa Site Thumbnail
Thumbnail images of web site home pages

Alexa Top Sites
Web site traffic rankings

Amazon EC2
Elastic Compute Cloud virtual hosting

Clicky
Web site analytics

Compete
Internet web site metrics and analytics

Cordurl
Geo coordinate translation

Dapper
Service for API creation

Domain Tools
Internet domain name lookup

Durl.us
URL shortening

Ecommstats
Web analytics

Hostip.info
IP lookup

HTML2PDF
HTML to PDF conversion

Internet Archive
Non-profit Internet library

IP Address Lookup
Determine IP address from domain name

Mint
Web site metrics and reporting

Mon.itor.us
Web site monitoring services

MyNotify
Feed publication

Nenest
Web forms and application framework

Outune
Web map engine

Pingdom
Web site monitoring and reporting

Qurl
URL redirection

SoftLayer
Systems management and monitoring

UnAPI
Proposal for web clipboard

W3Counter
Web site metrics tools

Webride
Attaches discussions to any site

WebThumb
Thumbnail image generation

Windows Live Custom Domains
Web site administration

Yahoo Site Explorer
Web site analysis service

Job Search

Indeed
Job search services

SmashFly
Job board posting service

Mapping

ArcWeb
Mapping and GIS services

BigTribe
Location based advertising

deCarta
Location-based services

EarthTools
Web services for geographical information

FeedMap
Blog geo-coding

Garmin MotionBased
GPS services and mapping

geocoder
Geocoding services for US

geocoder.ca
Geocoding services for Canada

GeoIQ
Geospatial analysis and heat mapping service

GeoNames
Geographic name and postal code lookup

GetMapping
Aerial photography and mapping service

GlobeXplorer
Mapping services

Google Maps
Mapping services

HopStop
Mass transit and walking directions

iShareMaps On Demand
UK Postcode Geocoder

Map24 AJAX API
Mapping services

Mappr
Photo mapping

MapQuest
Online mapping service

Mapstraction
Mapping API abstraction layer

MetaCarta
Location and geotagging services

Microsoft MapPoint
Mapping services

Microsoft Virtual Earth
Mapping services

Multimap
Global online mapping service

NASA
Satellite mapping images

Naver Maps
Korean mapping service

Nearby.org.uk
Geocoding service for UK

Ontok
Geocode any US address

OpenLayers
Mapping API abstraction layer

OpenStreetMap
The Free Wiki World Map

Platial
Collaborative geographic service

Plazes
Location discovery service

Poly9 FreeEarth
3D mapping service

Pushpin
Mapping service

Urban Mapping
Urban geo-spatial data services

USGS Elevation Query Service
Determine elevation based on latitude and longitude

ViaMichelin
Mapping, directions, and travel booking

Wayfaring
Map creation and sharing service

WHERE GPS
Mobile GPS widget platform

Where Is Tim Web Service
Location tracking

Where2GetIt Geospatial
Non-mapping geospatial services

Where2GetIt SlippyMap
Online mapping service

Whereis
Australian and New Zealand mapping service

Wigle
Wireless network mapping

Yahoo Geocoding
Geocoding services

Yahoo Map Image
Map image creation service

Yahoo Maps
Mapping services

ZeeMaps
Embedded maps and international geocoding

ZoomIn
Australian mapping service

Media Management

BBC
Multimedia archive database

Grouper Video
Video sharing service

Orb
Digital media remote access and management

Phanfare
Photo and video sharing service

Streamload
Online media storage

Medical

cPath
Medical database lookup

Kegg
Bioinformatics data services

NCBI Entrez
Life sciences search services

SeqHound
Bioinformatics research database

Messaging

411Sync
SMS, WAP, and email messaging

Aql
SMS solutions portal

Clickatell
SMS Messaging services

Jaiku
Social messaging service

Mobivity
SMS marketing messaging service

Movil
SMS messaging

PartySync
Messaging services

Sabifoo
IM to RSS conversion service

SmsBug
SMS messaging services

StrikeIron Global SMS Pro
SMS messaging services

StrikeIron Mobile Email
Mobile email messaging service

Textamerica
Moblogs

Trekmail
Messaging services

Twittervision
Location based data for the Twitter service

Userplane
Communication software for online communities

Vazu
SMS messaging service

Music

AOL Music Now
Music playlist management

Digital Podcast
Podcast search

Faces.com
Photo and media sharing service

Feedcache
Feed caching service

Freedb / CDDB
Online CD catalog service

Last.fm
Music playlist management

MP3Tunes
Music services

MusicBrainz
Music metadata community service

MusicDNS.org
Music fingerprinting service

MusicMobs
Social music service

OpenStrands
Music recommendation and discovery

Rhapsody
Online music services

SeeqPod
Music recommendation service

SNOCAP
Digital music marketplace

Soundtoys
Visual artists works repository

Tunelog
Music metadata management

WebJay
Music playlist management

Winamp
Customizable music player

Yahoo Music Engine
Desktop music player

News

AmphetaRate
News aggregator

ClearForest Semantic Web Services1
Natural language processing tools

Daylife
Online News Service

Digg

Findory
Personalized news aggregation

Macromedia News Aggregator
Data access service

Moreover
News delivery

NewsCloud
Social news service

NewsIsFree
Online news aggregation

Office

Backpack
Online information manager

Big Contacts
Web based contact management

EditGrid
Online spreadsheet

Google Documents List
Document management services

Google Spreadsheets
Online spreadsheets

Numbler
Online spreadsheet service

SlideShare
Presentation sharing community

Zoho
Online office suite

Photos

AOL Pictures
Online photo management

Buzznet
Photo sharing

Flickr
Photo sharing service

Fotolia
Royalty free stock photos

Google Picasa
Photo management and sharing service

imageLoop
Animated slideshow service

Panoramio
Photo upload site with organizer

Pixagogo
Online photo services

Riya
Photo search

ShutterPoint
Stock photography service

Smugmug
Photo sharing service

Snipshot
Online photo editing service

WebShots
Photo sharing service

Yahoo Photos
Online photo service

Zoto
Photo sharing service

Recommendations

Criteo
Distributed recommendation service

EasyUtil
Recommendation service

RapLeaf
Portable ratings system

Yelp
Local user reviews and city guides

Reference

Aonaware Dictionary
Dictionary lookup service/td>

City and State by Zip Code
Address lookup service

Dun and Bradstreet
Research company background data

Bussines Verification
Business research services

FUTEF Wikipedia API
Third party Wikipedia web service

ISBNdb
Books database

Library of Congress SRW
Information database search

Microsoft MSDN
Technical reference library

OpenDOAR
Academic research repository

PhoneVal
Phone number validation service

RealEDA Reverse Phone Lookup
Lookup address and name via phone

SRC Demographics
Demographic reference data

StrikeIron Address Verfication
Global address verification service

StrikeIron Do Not Call
Telephone number verification

StrikeIron Insider Trading
Insider trading transaction information

StrikeIron Phone Number Enhancement
Adds address and statistical data based on phone number

StrikeIron Residential Lookup
Residential directory lookup and validation service

StrikeIron Reverse Phone Lookup
Reverse phone lookup services

StrikeIron Sales Tax Basic
Sales and use tax data service

StrikeIron Super Data Pack
APIs for variety of reference data sources

StrikeIron US Census
Census data information service

StrikeIron Zacks Company Profile
Corporate profiles web service

Talis
Library 2.0 reference services

UrbanDictionary
Slang dictionary lookup

US Yellow Pages
Telephone directory

Yahoo Answers
Community driven reference service

Search

Alexa Web Information Service
Web site information and traffic data

Alexa Web Search
Web Search Engine

Amazon A9 OpenSearch

Gigablast

Google Ajax Search
Web search components

Google Code Search
Code search service

Google Desktop
Desktop search and gadgets

Google Search
Search services

Kratia
Democratic search engine

Naver
Korean search engine

Vast
Structured web search

Windows Live Search
Internet search

Wink
Social search service

Yahoo Image Search
Image search services

Yahoo Local Search
Local search service

Yahoo My Web Search
Personalized search services

Yahoo Related Suggestions
Search suggestion service

Yahoo Search
Search services

Yahoo Term Extraction
Contextual search service

AOL Open Auth
Authentication services

Shopping

Amazon eCommerce
Online retailer

Amazon Historical Pricing
Historical product sales data

Authorize.Net
Internet based payment gateway services

AvantLink
Affiliate marketing network

CNET
Shopping services

Commission Junction
Online affiliate programs

DataUnison eBay Research
eBay pricing and sales trend data

Direct Textbook
Book price comparison service

eBay
Online auction marketplace

GoodStorm
Online retail ecommerce

Google Base
Platform for structure and semi-structured data

Google Checkout
Shopping cart services

PriceRunner
Shopping comparison engine

Shopping.com
Online retail shopping

SwapThing
Community driven swapping site

UPC Database
UPC lookup service

Windows Live Expo
Online classifieds service

Yahoo Shopping
Shopping services

Zazzle
On-demand product creation service

Storage

Amazon S3
Online storage services

Box.net
Online file storage

MoveDigital
File delivery and management services

Omnidrive
Online storage services

Open Xdrive
Online data storage service

Openomy
Online file system

Tagalag
Email tagging

TagFinder
Tag extraction service

Tagthe.net
Tag recommendation service

TagTooga
Tag based Internet directory

Video

Truveo
Video search

Blinkx
Video search

Dave.TV
Video distribution network

LiveVideo
Video repository and user community

Revver
Video services

Veoh
Virtual television and video network

Video Detective
Film trailers, cast, images, and related information

Yahoo Video Search
Video search

YouTube
Video sharing and search

Widgets

ClearSpring
Widget creation, distribution, and tracking services

Google Gadgets

Netvibes
Personalized home page with widgets

Pageflakes
Personalized start page and widgets

Serence Klip
Desktop gadgets

SpringWidgets
Widget platform

TagWorld
Social web services

Windows Live Gadgets
Online gadgets service

Windows Sidebar Gadgets
Desktop gadgets

Yahoo Widgets
Desktop widgets

Yourminis
Personalized start page

WIKI

DBpedia
Structured query interface to Wikipedia

JotSpot
Wiki-style collaboration tools

PBwiki
Consumer wiki farm

WikiMatrix
Wiki search and comparison service