Notice: For 14.2,14.3 they can't be infinitely activated,but you can set an infinite date(9999/9/9)
You can use your own key to activate,and it has full tutorial inside
Also includes systemmodeler keygen.
It's available for any* version of mathematica and system modeler.
magic numbers here↓
for mathematica: { 59222 },
for system modeler : { 48967 4912 62774 42446 30046 4961 61182 31889 22384 }, FOR LEGACY VERSIONS ONLY