What other software is used besides ESRI? How to gain experience with it?

Hi all,

As you all know it’s quite challenging to find GIS jobs that pay well and that you are qualified for as of now. One problem I’m having in the job market is firms and agencies using softwares other than ESRI suite. I see that SmallWorld is used quite a lot along with GeoMedia however these are things I haven’t been exposed to at my current job but as far as I’m aware it seems crucial to learn for future jobs. All I can really do is watch YouTube videos and try to learn as much as I can because I’m not going to pay for a license I don’t need.

So with that, I’m wondering what other software you all use on the regular besides ESRI? Do you have any tips on how to expand my portfolio outside of ESRI?