#exrx

ExRx.net is a resource for exercise professionals, trainers and fitness enthusiasts. It features exhaustive exercise libraries (over 1800 exercises), reference articles, fitness assessment calculators, and other helpful tools.

The only comparison that should really matter is against yourself. Sometimes, however, we need to know where to set our sights.

For strength standards, as well as exercise and anatomy reference, exrx.net has been absolutely invaluable to this mathematician with zero formal training in biomechanics. Their page on strength standards is comprehensive and detailed, which can be helped along by their one-rep-max estimator.

This site has a large amount of information. I kinda like it. It seems like they update relatively regularly, and they try to keep on top of current info.