The Yahoo! Developer Network (YDN) is Yahoo!'s central resource for developers and partners. YDN offers developer tools, APIs, web services, and resources that help developers build rich web experiences, integrate key data sources, and driv...
The YUI Library provides tools for professional web development, including a rich JavaScript and CSS library -- all freely available under a liberal BSD license.
Use the expressiveness and cross-browser goodness that Flash and Flex provide to build a fun and powerful application on the Yahoo! Application Platform (YAP).
The Yahoo! Mail Web Service gives developers access to APIs for Yahoo! Mail. With the Yahoo! Mail Web Service APIs, you can build Web applications to perform tasks such as listing messages, displaying folders, and composin...
Build applications to perform tasks such as listing messages, displaying folders, and composing and sending messages with the Yahoo! Mail Web Service APIs.