Here is a collection of useful software that I personally recommend. They are all free to download and use and most of them are open source. All the links on this page go directly to each developer's own website where you should be able to download the software. The icons next to each reommendation denotes whether the software is compatible with Microsoft Windows or Apple MacOS.
“The top 10 in-demand jobs in the future don’t exist today. We are currently preparing students for jobs that don’t yet exist, using technologies that haven’t been invented, in order to solve problems we don’t even know are problems yet.”
— Richard Riley