Recently I was given an exercise to work on Node.js. A few years ago I was using Aptana Studio on Node.js. So after these few years I guess there should have some IDE or editor available for Node.js. So I ended up found Visual Studio Code and Atom. I tried both Visual Studio Code and Atom, and I choose Visual Studio Code at this moment because the autocomplete suggest is much more better than Atom. For software that I use, I usually prefer portable version. I found someone has made one, but I don’t like unofficial release. I looked again and lucky found a post here which mentioned that there is a portable version of Visual Studio Code. After further checking, it is actually a zip version and officially the download link is located deep inside the FAQ section of Visual Studio Code. Anyway for those who like no installer version, below is the link to download it directly.
Edit 2016-08-13: Finally the they have provided the Zip archive download link in their download page.