QSAR - pKa and logD calculation

Dear all,

can somebody recommend a software for the calculation of pKa and logD
values? Are any validated free programs available?

Thanks very much in advance,

Oliver

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Oliver Hucke, Dr.
                               Health Sciences Building - K418C
University of Washington      1959 NE Pacific St.
Dept. of Biochemistry         phone: (206) 685 7046
Box 357742                    fax  : (206) 685 7002
Seattle, WA 98195-7742        email: ohucke,u.washington.edu
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