What's "open source?"

Um, no. The exact definition of "open source" is a bit outside the scope of this FAQ, but briefly, open source is a type of software in which the source code is made available to the public, allowing anyone to modify the program freely. In many cases, such software is also distributed free of charge. Some examples of open source software you might be familiar with are Mozilla's Firefox web browser, or the Open Office suite of programs. For a more comprehensive definition take a look here. Our intention is for Metropolis to be released as FOSS (Free Open Source Software.)