Gateway to Yahoo! Services

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APIs & Web Services
- Answers
- Authentication
- Local
- Mail
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- Search
- Search Marketing
- Shopping
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- del.icio.us
- Flickr
- MyBlogLog
- Pipes
- TagMaps
- Upcoming
- ZoneTag
- Finance
- HotJobs
- Traffic
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- More RSS Feeds
- Messenger
- Music Engine
- Search
- Konfabulator
- r3
- YUI Home
- Widgets
- Utilities
- CSS
Resources
- ASTRA Library
- Design Pattern Library
- YUI Library
- Exceptional Performance
- Security Best Practices
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YDN Everything YDN

YDN: Your Gateway to Yahoo! Services

The Yahoo! Developer Network offers Web Services and APIs that make it easy for developers to build applications and mashups. Yahoo! APIs let developers tap into Yahoo!'s world-class data and infrastructure to help power their businesses and integrate data sources in new ways, making the web a more useful and interesting place for everyone.

Libraries & Best Practices

Design Pattern Library

Interaction patterns that describe and solve commonly occuring problems within a specific context, addressing a specific online user need or behavior.

Exceptional Performance

Best practices for improving web performance, including research and build tools such as YSlow that focus on the rules for high performance web sites.

Security

Best practices and guidelines to help you protect your users' trust in your application.

Yahoo! User Interface Library (YUI)

A set of utilities and controls, written in JavaScript, for building richly interactive web applications using techniques such as DOM scripting, DHTML, and AJAX.

APIs and Web Services

Authentication and Sign In

BBAuth

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

OpenID

Easy delivery of a simplified login experience for your users.

Communication

Mail

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

Messenger

Create add-ons with collaborative features that can run inside Yahoo! Messenger.

Content

Finance

RSS feeds deliver timely data on finance topics including top stories, most viewed, and company ticker symbol.

RSS Feeds

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

Information Searching

Answers

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

del.icio.us

Search del.icio.us bookmarks and tags or see when a specific user last posted.

HotJobs

Get HotJobs search results as an RSS feed. Basic and Advanced requests available.

Local

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

Maps

Flash, Ajax and Map Image APIs allow embedding of rich, interactive maps.

Search

Access data from the wide variety of web and vertical search content available via Yahoo!, including Audio, News, Site, Image, Web and Local search content.