Android is open source software, which means developers who don't work for Google are allowed to see the source code and create a range of applications to work with it.

NPR: Google's Android Software Debuts On New Phone

Freedom means the ability see all source code and to learn from others.

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They capture samples via honey pots and customer reports, un-package them, reverse engineer the executables so they can see the source code, and try to figure out what the malware is doing.

FORBES: Battleground Cyberspace: Hackers vs. White Hats

For most, the latest Mesa CVS source code is required (See Resources for a link), as older versions of Mesa come up with funny textures and have trouble with some of Descent 3's graphic features.

CNN: Review: The lowdown on Descent 3 for Linux

This in and of itself is admirable, but the BBC has taken it one step further and put the source code out there for all to see and use.

ENGADGET

Anyone searching for the source code on file-sharing systems will see a pop-up message alerting them to the fact that downloading the code is illegal.

BBC: NEWS | Technology | Microsoft targets source pirates

Thankfully, programmers keen to see what Courier might have been -- if just in bits and pieces -- can already download the source code for themselves.

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