A license agreement can be obtained freely for individual academic users for Windows here.
It doesn't read in my data
CDtool will have a new feature in version 1.3 (october/november) to allow a user defined
format to be specified.
CDtool crashes with my data
Email the file format you have with an example of when it is crashing firstname.lastname@example.org.
Will future versions be available
CDtool is continuing to be developed.