Analysis
I have a license to Mathematica that I use for personal stuff. But at the same time I have some stuff from work too that I have to work on.I love that I have a way to work with large chunks of data that doesn't involve writing programs to do the analysis. Don't get me wrong, I love to program, but at the same time I appreciate the fact that I can do simple what-if questions like that so simply.It would be nice to not have to have my own personal copy, but the work version is the better part of three grand.But at least I have it.