I have always longed for the graphical version of the Unix philosophy: rather than running large monolithic "applications", you have a lot of single purpose GUI

I have always longed for the graphical version of the Unix philosophy: rather than running large monolithic "applications", you have a lot of single purpose GUI utilities with well defined input/output interfaces that can be chained together into workflows using a simple script. For example: append some markdown text into a given text file; open a text file, tokenize and filter lines where token 1 matches user input; if the user input matches a certain pattern, route it to a given file etc. I'm already doing this with bash scripts (and they work for me), but for this idea to take hold with non-technical people, we will need GUI utilities.