CommandCNC is based on Linuxcnc (http://linuxcnc.org/), which is licensed under the GNU GPLv2 and LGPLv2.1 licenses.
The GPL code and LGPL code used in this product are distributed
WITHOUT ANY WARRANTY and is subject to the copyrights of
one or more authors.
Complete source code for the version of linuxcnc with all modifications used in CommandCNC is here:
Linuxcnc source code
Our modified version of mesaflash:
Mesaflash source code
We use an older version of libusb which we rename to avoid name collisions:
Libusbg 1.0.9 source code
The FLTK library is used unmodified in several utilities, and can be obtained here:
http://www.fltk.org/
The source code code for all other GPL or LGPL software in Xubuntu linux can be obtained from Ubuntu – currently from the following links:
http://cdimage.ubuntu.com/releases/14.04.5/release/source/
If I lose arc in the middle of a long cut, how do I restart where it left off?