new line after space

I have a text that goes like this.

hithereeveryone hellowahthey
commonsense notforeveryone
people ihatethemall

i want a program or a webtool that take the text above and sort it like this

hithereeveryone
hellowahthey
commonsense
notforeveryone
people
ihatethemall

after a space it becomes in a new line

open your document in notepad++, press ctrl+h, make sure that the search mode is set to "Extended"

find what: " "
replace with: "\n"
w/o the quotation marks of course

and you're done

fast and simple. thanks.