Hello,

a paper has been published in J. Chem. Inf. Comput. Sci., ASAP.

Personal Experience with Four Kinds of Chemical Structure Drawing
Software: Review on ChemDraw, ChemWindow, ISIS/Draw, and ChemSketch
Li, Z.; Wan, H.; Shi, Y.; Ouyang, P.;
J. Chem. Inf. Comput. Sci.; (Computer Software Review); 2004; ASAP
Article; DOI: 10.1021/ci049794h
http://dx.doi.org/10.1021/ci049794h

This article is based on the authorsf experiences
with ChemDraw, ChemWindow, ISIS/Draw, and
ChemSketch; the current version of ours is 5.0 Ultra, 6.0,
2.5, and 5.12, respectively.
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I don't know about ChemWindow, ISIS/Draw but their ChemDraw is old -
newest version is 8.0 (2004).

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A review of the

The Merck Index 13.2 CD-ROM Edition from CambridgeSoft
Town, W. G.;
J. Chem. Inf. Comput. Sci.; (Computer Software Review); 2004; ASAP
Article; DOI: 10.1021/ci0400462
http://dx.doi.org/10.1021/ci0400462

has also been published.

Best regards
Michael Engel