If are trying to get somewhere with the Digg API, I highly recommend this tutorial on accessing the Digg API with PHP. Remember to save the php files as a CodeIgniter library so that you can call it like this:

$this->load->library('diggclass');

The Adobe technology platform ActionScript reference for RIA development is a 50 paged Printable PDF which provides a complete ActionScript 3 API listing for Flash Player, Adobe AIR and Flex 3. [ via Brajeshwar ]

Saw this on Ajaxian - apparently Google has just come out with Javascript API for YouTube that will allow you to develop “the flexibility to customize the YouTube player with their own controls, player ‘chrome’, and even behaviors like custom playlists and menus.”. The YouTube Chromeless Player Reference is certainly interested and it looks like Christian Heilmann has written a video captioning system that lets you annotate as you pause. My spidey sense tells me this has BIG potential and some awesome stuff should be appearing over the next few weeks.

PHP Client Library for our Address Book API. Seems practical for social networking applications.

The Address Book API allows for a user to import their email contact list (from Gmail, Yahoo!, AOL, and Hotmail) into any site. Our API is used on dozens of sites and applications, and is a way for users to invite friends to a site, share content with people in their address book, and import their social relationships.

This topic comes up frquently enough to warrant a bookmark to Pamela Fox’s how-to on a Store Locator with PHP, MySQL & Google Maps. Being on the Google Geo APIs Team, i can’t wait to dive into this.

Top 15 Music APIs

PhpDelicious is a library for accessing the del.icio.us API. Recently upgraded so it’s now PHP 5 only, has an improved (more robust) HTTP request method, etc.

Simple caching proxy for Google Charts API in PHP. I seem to be discovering and bookmarking alot dealing with Google Charts API lately.

Google Chart API seems very easy to use.

Mapstraction is a library that provides a common API for various javascript mapping APIs to enable switching from one to another as smoothly as possible. Developers can code their applications once, and then easily switch mapping provider based on project needs, terms and conditions, and new functionality.

Update: Here’s a tutorial on how easy it can be to incorporate Mapstraction.