Online data tools

From NMR Wiki

NMR

nmr frequency map & calculator by Alex Jerschow

Karplus equation calculator

NMR calculator pulses, power levels, delays, temperature

Math

zunzun - may be all you need to fit curves to your data

google calculator

Staticsics applet @ Univ. of Baltimore

Chemistry & Biology

Buffer recipe calculator

Molecular Biology Workbench bioinformatics tools @ San Diego Super Computer Center