Last Updated: November 23rd, 2011
As part of the Android's open source Apache license, manufacturers are required to publicly release all of their own modifications and improvements made to the Android core. Today, both Samsung and Motorola decided it would be the perfect time to drop the Captivate and Droid X code to their respective open source sites.
This will allow ROM developers to figure out all those little quirks specific to the hardware and incorporate them into their releases.
Note, however, that the Android license doesn't cover proprietary extensions, such as custom vendor applications and widgets, and therefore does not require manufacturers to open source them:
With the exception of brief update periods, Android has been available as open source since 21 October 2008.
Last Updated: November 5th, 2010
Before Apple's iPhone and Google’s Android OS burst onto the mobile device scene in 2007, there were few significant advances in mobile technology. Frankly, "smartphones" (if we could even call them that at the time) were boring: they did little more than email, general messaging, picture taking, some basic apps and games, rudimentary internet browsing, and enterprise integration.
The biggest players at the time were Microsoft Windows Mobile, RIM's Blackberry, Palm, Symbian, and Linux. They all had their respective place in the mobile world (see chart below).
The Status Of Mobile Operating Systems In Late 2006
EMEA (Europe, Middle East, Africa) was clearly led by Symbian.