Should I credit Microsoft because I'm using their OS?
Should I credit Intel and NVidia/AMD because I'm using their hardware to develop?
Should I credit the miners who mined the necessary metals for the parts in my machine?
Where is the line...
Btw I do mention in all my projects what language, what IDE and which frameworks have I used, I often mention other stuff too, like what's been used to build (maven/gradle)... I mention external libraries from other developers as well (like in an Adobe Flash game, I didn't feel like writing an ActionScript<>SQL library, so I've used and credited someone elses)
However I rarely mention what I've used to make "art" (eg. Blender for 3D models, Inkscape for vector pics...), although I guess I could...