Mashup API by Takashi Sugiyama

Mashup API

Advertising

AdSpeed

GetMobile

Google AdSense

Google AdWords

Lat49

Microsoft adCenter

myGPSID

OpenX

Proximic

Right Media Exchange

UrlTrends

Wordtracker

Yahoo Ads

Yahoo Search Marketing

zanox

Answers

Answerbag

hiogi

Hunch

Questsin

Yahoo Answers

Blog Search

BlogCatalog

Blogwise

myFeedz

PubSub

Spinn3r

SplogSpot

Tailrank

Technorati

Blogging

After the Deadline

Akismet

AOL Journals

BackType

Blogger

Disqus

F My Life

FeedBlitz

FeedBurner

Freewebs

identi.ca

LiveJournal

Performancing

Poodz

PostMapper

TweetShrink

TypePad

Weblogs

Windows Live Spaces

Yammer

Zemanta

Bookmarks

BibSonomy

Blogmarks

Blue Dot

Cogenz

Connotea

del.icio.us

Diigo

GroupMe

Jots

linkaGoGo

Ma.gnolia

OnlyWire

Read It Later

Rrove

Scribble

Shadows

Simpy

Chat

AOL Instant Messenger

AOL Presence

Boldchat

Google Talk

IMified

Lingr

Meebo

MSN Messenger

ooVoo

txtful

WebAIM

Windows Live Messenger Library

Yahoo Messenger

Calendar

30 Boxes

Calgoo

Google Calendar

Orange Personal Calendar

Spongecell

Database

Amazon RDS Relational Database Service

Amazon SimpleDB

Carma

Comic Vine

DabbleDB

Docstoc

Freebase

gubb

M/DB

NEEScentral

NextDB 

Social Entrepreneur

Talis

Timetric

Yahoo Query Language

Email

Event

Amiando

ArtBeat

Boomloop

Burning Man

Eventbrite

Eventfinder

Eventful

FanSnap

Happenr

Livekick

Seattle 2.0

Spraci

TicketStumbler

Upcoming.org

Venteria

Zvents

Enterprise

Fax

Innoport FAX

Interfax

RingCentral Fax

Feeds

aideRSS

BlastCasta Feed

Bloglines

fav.or.it

Feedoor

Feedzz

Google Ajax Feeds

NewsGator

PostRank

RSSmeme

SimplePie Live

Syndic8

File Sharing

Bitsmash

Drop.io

FileSocial

FilesTube

Foldier

Issuu Search

Muecs

Pando

Prodigem

SeedPeer

Financial

Food

Beer Mapping

BigOven Recipe

FatSecret

Food Candy

RatePubs

Games

Government

Internet

Job Search

Authentic Jobs

CareerBuilder

Catsone

Cofundos

Getafreelancer

indeed

JobCentral Jobs

JobCrank

JobMotel

oDesk

Simply Hired Jobs

SmashFly

UK Civil Service

Zubka

Media Management

BBC

Cellblock

Grouper Video

Ipernity

Orb

Phanfare

Streamload

Mapping

Medical

cPath

EBI

Google Health

Indivo Health

Kegg

Microsoft HealthVault

NCBI Entrez

NHS

PDBj

Praxeon

SeqHound

UniProt

Web API for Biology

Messaging

Music

News

AmphetaRate

Chronicling America

ClearForest Semantic Web Services1

Daylife

Digg

Findory

Guardian

Macromedia News Aggregator

Moreover

New York Times Article Search

New York Times Best Sellers

New York Times Community 

New York Times Newswire

New York Times TimesPeople

NewsCloud

NewsIsFree

Outside.in

Reddit

Reuters Spotlight

Trendrr

Wellynews

Office

A.nnotate

Backpack

Big Contacts

EditGrid

Google Documents List

Google Spreadsheets

MindMeister

Numbler

PDF Alchemy

Scribd

Scribd iPaper

SlideShare

SlideSix

ThinkFree

ViaPost

Vuzit

WhereIsNow

Zoho

Payment

Amazon Flexible Payments Service

Chargify

CheddarGetter

Intellivative

LinkPoint

Moneybookers

mPayy

PayLeap

Payment Vision Pay

PayPal

Spreedly

TrustCommerce 

Zaypay

Photos

Other

PIM

Doris

Hiveminder

Nozbe

Piins Contacts

Remember the Milk

Tiktrac

Toggl

Toodledo

Windows Live Contacts

Windows Live Contacts Control

Project Management

88 Miles

Assembla

Basecamp

Comindwork

ConceptShare

Co-op

Goplan

Harvest

Huddle

Innotas

Lighthouse

LiveTimer

RescueTime

TickSpot

tinyPM

Unfuddle

Vitalist

Wipee List

Real Estate

AgentRank

Fizber Neighborhoods by State

ForeclosureListings.com

ImmobilienScout24

Mortgage Marvel

Nestoria

New York Times Real Estate

PlanningAlerts

RealtyBaron

Rentometer

RentRent

Trulia

Zillow

Recommendations

Reference

Search

Security

Anatoa

AOL Open Auth

BeenVerified

buySAFE

Cumulo Authorize

Defensio

FraudLabs Credit Card Fraud Detection

Google Client Authentication

Google OpenID

Google Safe Browsing

Google Single SignOn

Google Web Authentication

IPInfoDB E-Commerce Fraud Detection

Mollom

MyPW Authentication

Orange Authentication

PeoplePond

PhishTank

RPX

TokBox

TypeKey

Vidoop

Windows Live Data

Windows Live ID Client SDK

Windows Live ID Web Authentication

Yahoo BBauth

Shipping

DHL

eCourier

FedEx

Orderwave

Shipwire

UPS

US Postal Service

Yellow

Shopping

Social

Sports

Active

Are You Watching This

Cypress Golf

Dilogs

Ergast

FanFeedr Sports News

Fantasy Football Nerd

Map My Tracks

MapMyRun

MyFantasyLeague

NCAA Mens College Basketball

OddsMiner

StrikeIron Baseball Stats

Storage

Adobe Share

Amazon S3

Box.net

DigitalBucket

Estate++

FilesAnywhere

Mezeo

Mosso Cloud Files

MoveDigital

Nirvanix

Omnidrive

Open Xdrive

Openomy

PayLoadz

SimpleDB

TinyLoad

Wuala

Tagging

Calais

Swoogle

Tagalag

Tagatum

TagFinder

Taglets

tagthe.net

TagTooga

Tagyu

Telephony

Tools

Travel

Utility

Book Glutton

ByVoice

DocMail

Doculicious

Evernote

Google AJAX Language

Google Notebook

Google Translate

LangId

LouderVoice

Microsoft Translator

Notely

Notify.Me

PollDaddy

SlimTimer

Snappr.net

stikkit

Ta with you

TimeAPI

Urloid

World Time Engine

Video

Weather

FirstLook

InnerGears Weather by City

NOAA Weather Service

Norway Weather

Weather Channel

Weather Underground

WeatherBug

Widgets

Clearspring

Google Homepage

Microsoft start.com

Netvibes

Pageflakes

Serence Klip

Skicow

SpringWidgets

TagWorld

Widgetbox

WidgetPlus

WidSets

Windows Live Gadgets

Windows Sidebar Gadgets

Yahoo Mobile Widget Platform

Yahoo Widgets

yourminis

Wiki

Cogmap

DBpedia

JotSpot

MindTouch Deki Wiki

Ontok Wikipedia

PBwiki

Springnote

Wetpaint Injected

WikiMatrix