I am excited to announce that just a little while ago, we (Yahoo!) released two new (previously internal) libraries to the public.
The Yahoo! Design Pattern Library is being released under a friendly Creative Commons License. The goal is to share common patterns we see emerging on Yahoo! We hope that by opening up our design patterns that we can both share our thinking and garner your feedback.
At the same time we are releasing the Yahoo! User Interface Library. This is an industrial strength Ajax/DHTML library that we are currently using in lots of places all across Yahoo! Its got drag and drop, animation, event management, position handling, widgets, etc. And its all under the BSD license!
And we are announcing a new blog for both of these libraries. The Yahoo! User Interface Blog discusses both of these libraries in detail. You can choose to subscribe to all of the articles there, just the design side or just the development side.
Go check it out!