The CacBDD package is a package written in ANSI C++ for the manipulation of ordered binary decision diagrams. It is easy to use it by typing: make. The file "main.cpp" gives a toy demo for how to use this package. CacBDD has been successfully built on the following configurations: PC runing Ubuntu (64bit) with gcc PC runing Windows 7(64bit) with Visual C++ 2010 Send feedback to: Guanfeng Lv University of Beijing Technology, School of Comp.Sci and Tech. lgfcube@gmail.com Kaile Su Griffith University, IIIS. kailepku@gmail.com