Atom is a text editor that's modern, approachable, yet hackable to the core—a tool you can customize to do anything but also use productively without ever touching a config file. Atom comes pre-installed with four UI and eight syntax themes in both dark and light colors. If you can't find what you're looking for, you can also install themes created by the Atom community or create your own.

Atom helps you write code faster with a smart, flexible autocomplete. Easily browse and open a single file, a whole project, or multiple projects in one window.

Using the default plugins, the following languages are supported in some aspect as of v1.5.1: HTML, CSS, Less, Sass, GitHub Flavored Markdown, C/C++, C#, Go, Java, Objective-C, JavaScript, JSON, CoffeeScript, Python, PHP, Ruby, Ruby on Rails, shell script, Clojure, Perl, Git, Make, Property List (Apple), TOML, XML, YAML, Mustache, Julia & SQL.

Atom 1.42.0 notable changes​:

  • #19770 – Add appropriate punctuation scopes to various characters in HTML.
  • #19795 – Add support for Ruby syntax highlighting of symbols inside literal symbol arrays (e.g %i() and %I() when using Tree-sitter parsers).
  • #19840 – Add support for Ruby syntax highlighting of alias, alias_method, block_given?, defined?, iterator?, super, and undef when using Tree-sitter parsers.
  • #19880 – Improve JavaScript syntax highlighting of function names and function parameters when using Tree-sitter parsers.
  • #19908 – Add support for jl as a language identifier for the Julia language when using fenced code blocks in Markdown files.

Download: Atom 1.42.0 (32-bit) | Standalone | ~200.0 MB (Open Source)
Download: Atom 1.42.0 (64-bit) | Standalone
Links: Atom Home Page | Release Notes