Do companies use IDE's to work or do they use something else to write code for projects?

Question

May seem a silly question however without being exposed to a software engineering/development environment I'm curious how or what they use to write code & work on projects? Is it off the shelf like Visual studio or something in house?

Answer 1

There are well known IDE that people use (rather than inhouse) popular IDE are eclipse, intellij, netbeans, visual studio...