https://austinbenny.github.io/boltStressCalculator/build/html/index.html
This is a calculator that takes as input forces, moments/couples, bolt locations from the user and outputs the stress, IR and other structural parameters for each bolt. The value add from a calculator like this is the end user has free rein on the type of bolting pattern to be analyzed as long as the centroid of the bolting pattern is specified. You could imagine analyst A attempting to find the IR on a 4 bolt pattern which could take about 2 hours or use this calculator and get reliable results in 5 minutes. The calculator also has an HTML interface for users to provide inputs. The outputs are written to either a csv file, a .tex file, or an HTML file.