Can't speak for anyone else but I'm constantly battling to keep my browser from crashing due to too many tabs. Namely Chrome and Firefox on Linux and OSX. I open tabs, then forget to close them. Even as I write this Chrome is popping up alert boxes saying so-and-so page has stopped responding, do I want to Kill or Wait? The thought of adding a fairly heavy-weight SPA IDE to that mix is not attractive.

Out of curiosity, can Atom (https://atom.io/) load a remote IDE into its separate memory space? Only best-of-both worlds I can think of.