Hi, I am a PhD student studying fluid dynamics, and have a heavy interest in numerical programming and simulations. I come from a background in Applied Mathematics and Theoretical Physics. I have an ubuntu system set up and I have the typical software I plan to be using regularly, ie MATLAB, Python, LaTeX. Is there any useful/fun software you guys recommend that either is obscure or something not many people would think of? Anything relevant to maths/physics or even just admin related to PhD is much appreciated! Even any coding languages which you think would be of worth, please throw them down to. Thanks!