What Language Should You Use for Econometrics?

There are plenty of tools and languages you can use these days for doing econometrics in. What are they, and what are they good for (or not good for)? In this video I cover six popular options for doing econometrics in: Stata, R, Python, Matlab, Julia, and Excel, and discuss the kinds of tasks each is best suited for, and the places where they run into problems. Which one fits the stuff you need to do best?