Blueprint

A standards-based language, easy-to-use toolkit, and a seamless path to thousands of mobile devices.

BrowserPlus™

Create rich web apps with desktop capabilities. Extend the browser with open source JavaScript APIs and secure desktop access.

Desktop Widgets

Tools to help build self-contained desktop widgets with the Konfabulator SDK.

Hadoop

Information about the Apache Hadoop project and the Yahoo! Distribution of Hadoop.

Network Time

Little helpers for applications that consume web services.

Pipes

A powerful composition tool to aggregate, manipulate, and mashup content from around the web.

Connected TV

Tools for building widgets that run on consumer electronics devices. Find out how you can participate.

YQL

Query, filter, and combine data across Yahoo! and beyond.

YSlow

A Firefox add-on integrated with the Firebug web development tool. YSlow grades web page performance based on best practices.

Yahoo! User Interface Library (YUI)

A set of utilities and controls, written in JavaScript, for building richly interactive web applications.

APT from Yahoo!

Interact with our advertising platform and ad exchange-based technology.

Y! Search Marketing

Create and manage campaigns, pull reports, set bids and more. All exposed via SOAP-based Web Services.

BBAuth

Registered Yahoo! users can sign on for your services without having to complete yet another registration process.

OAuth

Allow users to sign on to your services in a secure and standardized way.

OpenID

Easy delivery of a simplified login experience for your users.

Contacts API

Read and write user’s Contacts data (i.e., the Yahoo! Address Book).

Mail

Build applications to list messages, display folders, compose and send messages.

Finance

Timely data on finance topics including top stories, most viewed, and company ticker symbol delivered via RSS.

HotJobs

Post, edit, refresh and delete public and private job ads. Use the API to manage your job ads in real-time.

MyBlogLog

Query the MyBlogLog social network for metadata associated with user and site profiles.

RSS Feeds

Content for a variety of products and services – thousands of feeds in total.

Shopping

Access millions of product listings and thousands of merchants.

Upcoming

User-generated event and location data for your applications and websites.

Fire Eagle

Create location-aware applications and services.

GeoPlanet™

A resource for managing all geo-permanent named places on Earth.

Local

Bring location-based information and user-created content to your website.

Maps

Map APIs allow embedding of rich, interactive maps.

Traffic

Access real-time traffic alert information for a given location.

Placemaker™

Identify, disambiguate, and extract places from unstructured textual content.

Weather

Get up-to-date weather information for your location.

Flickr

Tap into this highly interactive photo-sharing community that uploads and shares photos and tags.

Media Player

Create an embedded player for each audio link on your site, or, with one click, turn any page into a playlist.

Music API

Access the Yahoo! Music catalog of artists, albums, tracks, videos, ratings and more.

Answers

Provide user-generated advice on any topic, from within your own site.

BOSS

BOSS (Build your Own Search Service) is Yahoo!'s open search web services platform for the next generation of search innovation, serving hundreds of millions of users across the Web.

delicious

Search delicious bookmarks and tags or see when a specific user last posted.

SearchMonkey

Use structured data to enhance your Yahoo! Search results and make them more useful, relevant, and visually appealing.

Y! Search Web Services

Access data from Yahoo!'s web and vertical search content including news, site, image, and local search content.

Contacts

Read and write user’s Contacts data (i.e., the Yahoo! Address Book).

Social Directory

Access shared and public profile data for users and their connections.

Status

Read and write user's status data.

Updates

Read, write, and delete a user's activity updates.

YAP

Innovate and build powerful applications - we'll provide the distribution.

My Yahoo!

Distribute your YAP applications on My Yahoo!.

Yahoo! Meme

Search, post and enjoy the Web's Memes.

Flash

Java

JavaScript

.NET

PHP

Python

Ruby

Silverlight