Brackets: https://github.com/adobe/brackets
Ok this one have been bought by adobe but its source are still freely available and you dont have to pay a premium for the full feature.
I really love that editor because of the interface, i mean there is tons of editor and this one is not the lightweighter nor the fastest (in particular on opening). But it is still nice to write code with it and i dont feel like i am torturing myself every time i write a piece of js code.