Wolfram alpha was pretty impressive when it came out, and remains on of the best ways to do quick back of the envelope estimates. However, the lack of improveme

Wolfram alpha was pretty impressive when it came out, and remains on of the best ways to do quick back of the envelope estimates. However, the lack of improvement over the years has been very dissappointing. My subjective experience has been that capabilities been steadily broken or removed. It used to be possible to do an ideal gas calculation for example, by just typing something like "10^10(boltzman constant)(room temperature)/(1 liter). Good luck making that work now. They also continue to persist with their nonsense subscription model where they refuse to sell institutional licenses so they can ultimately extract more money from students. Its a shame there arent better open source alternatives yet.