What technologies could you not live without?

This question is asked by technical screeners to see how passionate you are and what are your areas of interest.

When you are asked this question, use it as a chance to present what you like, why, evaluate pro and cons of your favorite technologies, show that the technology is a tool for a job and that it should be selected based on the requirements.

This technical screeners often want see if you have some strong opinions, how well you are able to back them by reasons and evidence, how well you explain things and how you behave when challenged - if you are mature enough and can handle your ego well.