HSMAdvisor keeps getting better. Like the SFPF Calculator it now enables entry of the maximum acceptable cutting force in the “Machine Profile” settings. (There’s currently a bug in that software that requires it to be entered in imperial units to work properly.) The calculator will warn you if that force is exceeded and slow the feed rate accordingly. Unlike the SFPF Calculator, it has an extensive tool data base, which can be customized/augmented. (The SFPF calculator only supports calculations for straight endmills.)
Also unlike the SFPF Calculator, it supports both imperial and SI units for input and/or output. and has an attractive GUI.
Like the SFPF calculator it apparently uses material K-Factors for its calculations. A recent earlier update added K-Factors for wood, but they’re 2-3 times higher that they should be IMO. But it so happens that the one just added for acrylic (and most other plastics), should be “close enough” for most woods especially since they’re likely crude approximations anyway.