It doesn't. It doesn't do anything to your project. It does offer awesome VCS integration features. It does offer a powerful debugger. And it gives you an Java

It doesn't. It doesn't do anything to your project. It does offer awesome VCS integration features. It does offer a powerful debugger. And it gives you an JavaScript IDE that doesn't suck. VIM just cant handle modern JS code. PyCharm also gives you PEP8 and JSLint support. And its intelligent autocomplete is awesome and makes programming in dynamically typed languages a breeze. OP just couldn't be bothered to give the product a chance. While he is smugly juggling dozens of shell instances I let the IDE do the work for me. Jetbrains is making the best IDE around.