The Rascal is open source hardware. This means that you are free to build off of my work, provided that you also allow me to build off of your work, as is specified in the licenses described below.
For now, the hardware is under the Creative Commons BY-SA license, and the software is either GPL or BSD licensed. Some of the software source code for the bootloaders is missing below, but only because I'm changing it every day. Once we have stable releases, they'll be posted here. In the meantime, if you want sources, post something in the forums or email Brandon.