• Search for file: cmd+t
• Search in project directory: cmd+shift+f
• Show command hints and corresponding shortcuts(if any): cmd+shift+p

• Settings->Editor->Scroll pass end, allow editor to pass end of file without manually tap "space"

• emmet:Text Editor with shortcuts to edit HTML & CSS
• highlight-selected: highlight words with same spelling, speed up debugging spelling errors.
• open-recent
• minimap
• git-clone
• git-plus
• git-diff
• git-time-machine
• merge-conflicts
• color-picker: a palette for picking colours
• pigments: used for color highlighting and manipulation of designing GUI
• material: awesome theme
• script-runner: allows you to run scripts in Atom
• atom-live-server
  
  • by using control+option+3, we open a local server who serves the current file at 127.0.0.1:3000
    
  • by using control+option+q, we can close the server
• browser-plus
• open-in-browser
• wakatime: used to show workflow metrics
• terminal-plus
• jumpy
• atom-ternjs: auto complete engine for javascript
• atom-beautify: beautifies the source code
• open-recent

Used for showing line information/error/warning, etc.
when searching for linter for a specific language, just type linter-xxx

• linter-jscs
• linter-jshint
• javscript-snippets
• autocomplete-xml