From the beginning of using Atom, it impressed me. I felt like it is a very intuitive editor with great usability. I like that Atom has active community with often updates and improvements. I also really like Atom’s UI and how Atom visualizes errors, diffs, etc.
Atom’s startup was extremely slow and I didn’t find out how to open files from different projects in current window in previous versions. Fortunately, these downsides are fixed in new version and I replaced Sublime editor with Atom. In one week of using Atom I used this list of packages.
Synced-sidebar – sync project sidebar (folder view) with currently active file
Open-recent – open recent files in the current window
Minimap – a preview of source code
Split-diff – shows diff between two split panes
Minimap-split-diff – a minimap plugin for split-diff package
Tool-bar – provides extensible tool bar
Tool-bar-almighty – adds many commonly used actions in the tool-bar
Highlight-selected – highlights selected text in opened file
Minimap-highlight-selected – a minimap plugin for highlight-selected package
Todo-show – finds all the TODO, FIXME, CHANGED, XXX, IDEA, HACK, NOTE, REVIEW comments in your project
Pigments – highlights color values
Minimap-pigments – minimap plugin for pigments package
Jumpy – jump between characters without using a mouse
Emmet – web development toolkit which greatly improves HTML & CSS workflow