m4b-tool

It depends. If its something like my personal todo list pure-todo [1], I tend to write it down in less than a week without using any frameworks and hardly ever touch it again. If it's something like m4b-tool[2] or tone [3], that has to be maintained for a while, I tend to use battle proven libraries or frameworks (in this case Symfony, because it is an older project and Spectre.Console and atldotnet for tone). I prefer libraries over frameworks though, less background magic. However, I have the feeling that you also find something in this comment that you don't like - maybe the shameless advertisement of my FOSS projects ;-) 1: https://github.com/sandreas/pure-todo 2: https://github.com/sandreas/m4b-tool 3: https://github.com/sandreas/tone

Probably tone[1] (audio tagger) or m4b-tool[2] (audio book merger), although both projects could use a little love :-) 1: https://github.com/sandreas/tone 2: https://github.com/sandreas/m4b-tool