Piling up to the grateful comments, I've been using Sublime Text for years and still love it. It has never quite done it as an IDE for me as I'm used to more fully fledged ones like IntelliJ, however it is an amazing scratch pad and text manipulation tool. I pretty much have it permanently open. This post made me realise I had never bought a license, it is now done. Thank you for it being fair, by the way.