A curated list of code formatters. Inspired by awesome-machine-learning.
Other awesome lists can be found in the awesome-awesomeness (https://github.com/bayandin/awesome-awesomeness) list.

If you want to contribute to this list (please do), send me a pull request or contact me @rishirdua (https://www.twitter.com/rishirdua)


Table of Contents


- General Purpose (#general-purpose)
- Language Specific (#language-specific)
  - C/C++ (#cc)
  - Cobol (#cobol)
  - CSS (#css)
  - Fortran (#fortran)
  - Haskell (#haskell)
  - HTML (#html)
  - Java (#java)
  - JavaScript (#javascript)
  - JSP (#jsp)
  - .NET (#net)
  - Perl (#perl)
  - PHP (#php)
  - PL/SQL (#plsql)
  - Python (#python)
  - Ruby (#ruby)
  - Shell (#shell)
  - VBS (#vbs)
  - XML (#xml)



General Purpose

⟡ Artistic Styler (http://astyle.sourceforge.net/) - Source code indenter, formatter, and beautifier for the C, C++, C# and Java programming languages.
⟡ Atom-Beautify (https://atom.io/packages/atom-beautify) - Beautify HTML, CSS, JavaScript, PHP, Python, Ruby, Java, C, C++, C#, Objective-C, CoffeeScript, TypeScript, Coldfusion, SQL, and more in Atom editor.
⟡ Prettier (https://prettier.io/) - An opinionated code formatter for JavaScript, Flow, TypeScript, Vue, JSON, CSS, Less, SCSS, GraphQL, and Markdown
⟡ Uncrustify (http://uncrustify.sourceforge.net/) - Beautifier for C, C++, C#, ObjectiveC, D, Java, Pawn and VALA.
⟡ Unibeautify (https://unibeautify.com/) - Universal code beautifier with a GitHub app. Supports HTML, CSS, JavaScript, TypeScript, JSX, Vue, C++, Go, Objective-C, Java, Python, PHP, GraphQL, Markdown, and more.
⟡ clang-format (http://clang.llvm.org/docs/ClangFormat.html) - Automatic formatting for C, C++, Java, JavaScript, ObjectiveC and Protobuf.

Language Specific

C/C++

⟡ BCPP (http://invisible-island.net/bcpp/) - indents C/C++ source programs, replacing tabs with spaces or the reverse.
⟡ GNU Indent (http://www.gnu.org/software/indent/) -  Unix utility that reformats C and C++ code in a user-defined indent style and coding style. GNU style is used by default.
⟡ GreatCode (http://sourceforge.net/projects/gcgreatcode/) - C/C++ source code beautifier that is now fully open source.

Cobol

⟡ Cobol Beautifier (http://www.siber.com/sct/tools/cbl-beau.html) - Parses your program just like a real Cobol compiler and then it generates Cobol code from the resulting Cobol Program Tree.

CSS

⟡ CSSTidy (http://csstidy.sourceforge.net/) - Opensource CSS parser and optimiser available as executeable file which can be controlled by command line and as PHP script.

Fortran

⟡ Fortran 90 PPR (ftp://ftp.ifremer.fr/ifremer/fortran90/) - Fortran 90 preprocessor and formatter written in Fortran 90.

Haskell

⟡ hindent (https://github.com/chrisdone/hindent) - Extensible Haskell pretty printer available both as a library and an executable.

HTML

⟡ HTB (http://www.digital-mines.com/htb/) - Command-line utility to reformat HTML/XML/XSLT source code with an array of user specified options.
⟡ Tidy (http://tidy.sourceforge.net/) - Free-standing C library

Java

⟡ Google Java Format (https://github.com/google/google-java-format) - google-java-format is a program that reformats Java source code to comply with Google Java Style.
⟡ JALOPY (http://notzippy.github.io/JALOPY2-MAIN/) - Source code formatting tool for the Sun Java Programming Language.
⟡ Jindent (http://www.jindent.com/) - Commercial source code formatter for the programming languages Java, C and C++

JavaScript

⟡ beautifier.io (https://beautifier.io/) -  Online JavaScript Beautifier

JSP

⟡ JSPPP (http://jsppp.sourceforge.net/) - Indentor for JSP files in various styles.

.NET

⟡ NArrange (http://www.narrange.net/) - Code beautifier that automatically organizes code members and elements within .NET classes.

Perl

⟡ PerlTidy (http://perltidy.sourceforge.net/) -  Perl script which indents and reformats Perl scripts.

PHP

⟡ PHP_Beautifier (http://pear.php.net/package/PHP_Beautifier) - Beautifier for PHP
⟡ phpCB (http://www.waterproof.fr/products/phpCodeBeautifier/) - Tool available as a GUI, command line and an integrated tool of PHPEdit.
⟡ phpStylist (http://sourceforge.net/projects/phpstylist/) - Formatter with customizable options.

PL/SQL

⟡ Pl/Sql tidy (http://psti.equinoxbase.com/) - Program to tidy, beautify or format Pl/Sql code in a batch file or Dos prompt.
⟡ Poor Man's T-SQL Formatter (http://architectshack.com/PoorMansTSqlFormatter.ashx) - .Net 2.0 library with demo UI, command-line bulk formatter, SSMS/Visual Studio add-in, notepad++ plugin, winmerge plugin, and web service for reformatting and 
coloring T-SQL code to the user's preferences.

Python

⟡ black (https://github.com/ambv/black) - The uncompromising Python code formatter 
⟡ pindent (http://svn.python.org/projects/python/trunk/Tools/scripts/pindent.py) - Adds comments when blocks are closed, or can properly indent code if comments are put in.
⟡ yapf (https://github.com/google/yapf) - A formatter for Python files.

Ruby

⟡ Ruby Script Beautifier (http://www.arachnoid.com/ruby/rubyBeautifier.html) - Beautifier written in Ruby.

Shell

⟡ ShellIndent (http://www.bolthole.com/AWK.html) - Indent formatting program for .sh scripts.

VBS

⟡ VBSBeautifier (http://www.daansystems.com/vbsbeaut/) - Beautifier for ASP and clientside VBScript files.

XML

⟡ XML Indent (http://xmlindent.sourceforge.net/) - XML stream reformatter written in ANSI C.

codeformatters Github: https://github.com/rishirdua/awesome-code-formatters