Best code editor you have never heard of.

I've recently looked for a programmer editor that I can use to code in C(++) which works on Linux using its native compiler (the one from GCC, for instance) and on Windows using Visual Studio compiler ...

GitHub is morphing its open source code editor, Atom, into more of a full-fledged IDE with a new project appropriately called Atom-IDE. "Get smarter context-aware auto-completion, code navigation ...