The goal of Operation Project X is to crack the 2048-bit RSA private encryption key Microsoft uses to sign Xbox media, by using distributed computing. This key could be used by Xbox owners to run homebrew code on their machines.
dxflib is an opensource C++ library for reading and writing AutoCAD (R) DXF files. It provides the functionality to read and write many basic entities as well as information about layers and blocks. From the author of QCAD.