Back when Microsoft was actively pursuing an acquisition of Yahoo!, only to withdraw its bid, many observers felt that the withdrawal was good news for Yahoo!'s many open source and open initiatives. But we made the point back then that the game might just have begun. From Yahoo!'s open strategy for developers, to its Yahoo! User Interface Library (YUI), to the company's reliance on Hadoop for advanced fast queries, Yahoo! has always been a strong supporter of open standards. Yahoo!'s entire site runs on FreeBSD--a free operating system descended from AT&T Unix.

Microsoft still isn't acquiring Yahoo!, but it has struck a far-reaching search deal with the company. What are the implications for Yahoo!'s many open source and open standards initiatives?

Dojo, one of the leading open-source libraries and widget sets for JavaScript programming, released its latest version (1.2) yesterday. Dojo, which is developed by the Dojo Foundation and released under both the BSD License and Academic Free License, is officially integrated with a number of Web development frameworks, such as Django and the Zend Framework, and by vendors such as IBM and Sun Microsystems.

Yahoo announced yesterday that it was releasing version 2.6 of its popular Yahoo User Interface (YUI) library, a collection of JavaScript objects and functions for client-side Web programming. YUI, distributed under the BSD license, is similar to such open-source JavaScript libraries as jQuery (see related story), Dojo, and Prototype/Scriptaculous. Note that this release is not the same as YUI 3.0, a preview of which was released earlier this year, and which will not be backward compatible with version 2.x.