General

• – Beautifies your code in various languages.

• – Adds file type icons to Atom for improved visual grepping.

HTML/CSS/JS

• – A toolkit for faster HTML/CSS coding.

• – Autocompletes HTML tags and CSS properties.

• – Displays the color of CSS/SCSS/LESS variables in the editor.

JavaScript & Frameworks

• – JavaScript code intelligence.

• – Autocompletes module names when requiring/importing.

• – React.js (JSX) language support, snippets, and auto-completions.

Version Control

• – Perform Git operations without leaving Atom.

• – Visually interact with Git history for a file.

Linters

• – A base linter interface.

• – Lint JavaScript using ESLint.

• – Lint HTML using htmlhint.

Others

• – Finds all TODO, FIXME, etc. comments in your project and lists them in a pane.

• – Easily switch between projects.

• – Shows a mini map of the file to easily navigate through the code.

Remember to install these packages carefully and read through their documentation to fully understand their functionalities.