I want to know what Wim Taymans, Lennart Pottering, and FreeCAD's RealThunder use! There doesn't seem to be many of the big name devs, outside of core low level

I want to know what Wim Taymans, Lennart Pottering, and FreeCAD's RealThunder use! There doesn't seem to be many of the big name devs, outside of core low level stuff, talking about editors, unlike guitarists and such who love talking about gear.