CalcForge --- GitHub (100% FREEWARE)
https://calcforge.com/1/free-beam-calculator
Optimal Beam
https://optimalbeam.com/beam-calculator.php
Beamguru
https://beamguru.com/online/beam-calculator/
https://platform.skyciv.com/beam
Calcresource
https://calcresource.com/
Calculators on Statics
https://calcresource.com/statics.html
