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Janocchio is a prediction tool for coupling constants, highlighting contributions from the pharmaceutical industry.
While looking up a reference for FirstGlance in Jmol, I found Janocchio, a CDK and Jmol based tool for prediction of coupling constants, recently published in Magnetic Resonance in Chemistry. It's written by Evans, Bodkin, Baker and Sharman (from Eli Lilly) and licensed LGPL. It is one of those rare contributions of pharmaceutical industry, and I can only deeply appreciate this contribution.
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Egon Willighagen (2007) studied this question.
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