In the 155 releases since launch, the editor has improved immensely in performance, stability, feature-set, and modularity. The editor is faster inscrolling, typing, and start-up time. Atom now has a Windows installer, Linux packages, and several heavily requested features have been added like pane resizing and multi-folder projects.
Atom has become more modular through stabilizing the API, built-in ES6 support using babel, services for inter-package communication, decorationsfor extending the core editor, and new themes that automatically adapt the UI to the syntax colors. We’ve even removed some of our core packages in favor of community-built packages like autocomplete-plus.
This is a solid text editor, worth a look.