A set of guidelines for a specific programming language that recommend programming style, practices, and methods for each aspect of a program written in that language.
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C++ Core Guidelines - A set of tried-and-true guidelines, rules, and best practices about coding in C++.
The Clojure Style Guide - A community coding style guide for the Clojure programming language.
The D Style - A set of style conventions for writing D programs.
Fortran 90 Standards - European Standards For Writing and Documenting Exchangeable Fortran 90 Code.
Google Java Style Guide - Google's coding standards for source code in the Java™ Programming Language.
Alibaba-Java-Coding-Guidelines - A guide for Java developers.
AngularJS Style Guide - Community-driven set of best practices for AngularJS application development.
Google Markdown Style Guide - Style guide for Google-originated projects using Markdown.
Objective-C Style guide - Style guide & coding conventions for Objective-C projects.
NYTimes Objective-C Style Guide - The Objective-C Style Guide used by The New York Times.
Perl best practices v4 - Slides by Randal Schwartz, based on the book by Damian Conway.
Perl Elements to Avoid - A list of unrecommended practices, and what to do instead.
PHP FIG - PHP Standards Recommendations.
PHP The Right Way - An easy-to-read, quick reference for PHP best practices, accepted coding standards, and links to authoritative tutorials around the Web.
Clean Code PHP - Clean Code concepts adapted for PHP.
The Hitchhiker's Guide to Python - Highly regarded Python best practices guide.
Ruby Style Guide - Airbnb's Ruby Style Guide.
Ruby Style Guide - A community-driven Ruby coding style guide.
Databricks Scala Guide - Databricks Scala Coding Style Guide.
Swift - GitHub Official Swift style and conventions.
Swift Style Guide - LinkedIn Official Swift Style Guide.
Xmartlabs Swift Style Guide - Swift language style guide & coding conventions followed by Xmartlabs.
[Visual Basic Concepts](https://msdn.microsoft.com/en-us/library/aa240822(v=vs.60).aspx)
The PowerShell Best Practices and Style Guide - The Unofficial PowerShell Best Practices and Style Guide.
Android Guidelines - Architecture and code guidelines we use at ribot when developing for Android.
Xmartlabs Android Style Guide - Style guide for Android by Xmartlabs.
HAL - A simple format that gives a consistent and easy way to hyperlink between resources in your API.
Microsoft REST API Guidelines - The Microsoft REST API Guidelines.
JSON API - Recommendations - This section contains recommendations for JSON API implementations.
API Security Checklist - Checklist of the most important security countermeasures when designing, testing, and releasing your API.
CSS Guildelines - High-level advice and guidelines for writing sane, manageable, scalable CSS.
Frontend Guidelines - Some HTML, CSS and JS best practices.
Sass Guidelines - An opinionated styleguide for writing sane, maintainable and scalable Sass.
Airbnb CSS / Sass Styleguide - A mostly reasonable approach to CSS and Sass.
HTML Style Guide - A style guide which helps you write better, performant, structured, scalable and maintainable HTML.
HTML + CSS Code Guide - Standards for flexible, durable, and sustainable HTML and CSS.
U.S. Web Design Standards - Open source UI components and visual style guide for U.S. government websites.
CoffeeScript Style Guide - A collection of best-practices and coding conventions for the CoffeeScript programming language.
Ambassador Conventions - A UX and design pattern library for all Ambassador apps.
Making The Best Use of C - This chapter provides advice on how best to use the C language when writing GNU software.
Keep a CHANGELOG - Don't let your friends dump git logs into CHANGELOGs™.
Checkstyle - Tool for checking Java source code for adherence to a Code Standard or set of validation rules.
North - Design and development standards to align and guide your project.
EasyCodingStandard - The Easiest Way to Use Any Coding Standard.
PHP Coding Standards Fixer - The PHP Coding Standards Fixer (PHP CS Fixer) tool fixes your code to follow standards.
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