There are only two hard things in Computer Science: cache invalidation and naming things -- Phil Karlton

Naming convention is a set of rules for choosing the character sequence to be used for identifiers which denote variables, types, functions, and other entities in source code and documentation.

Reasons for using a naming convention (as opposed to allowing programmers to choose any character sequence) include the following:

• To reduce the effort needed to read and understand source code;
• To enable code reviews to focus on more important issues than arguing over syntax and naming standards.
• To enable code quality review tools to focus their reporting mainly on significant issues other than syntax and style preferences.

• C# Coding Standards and Naming Conventions
• Git Comment Convention
• JavaScript Name and Coding Conventions
• Powershell name convention
• R style guide and name convention
• SQL Server Name Convention and T-SQL Programming Style

• NET Naming Guidelines
• Framework Design Guidelines
• Google style guides for open source projects
  • Google R Style Guide
  • Google Python Style Guide
  • Google C++ Style Guide
  • Google HTML/CSS Style Guide
  • Google Java Style Guide
  • Google JavaScript Style Guide
  • Google JSON Style Guide
  • Google Common Lisp Style Guide
  • Google Objective-C Style Guide
  • Google Shell Style Guide
  • Google Vimscript Guide
  • Google XML Document Format Style Guide
  • An AngularJS Style Guide for Closure Users at Google
• MSDN Powershell Style Guide
• MSDN Approved Verbs for Windows PowerShellCommands
• The PowerShell Best Practices and Style Guide
• PostgreSQL naming conventions
• SEI CERT Coding Standards
  • SEI CERT C Coding Standard
  • SEI CERT C++ Coding Standard
  • SEI CERT Oracle Coding Standard for Java
  • Android Secure Coding Standard
  • SEI CERT Perl Coding Standard
  • SEI CERT Perl Coding Standard

• SQL Server Documentation
• SQLite Documentation
• PostgreSQL Manual
• Oracle DB documentation
• MySQL documentation

• C# Language (C# Programming Guide)
• JavaScript
  • Airbnb JavaScript Style Guide
  • Standard ECMA-262
  • Microsoft TypeScript Coding guidelines
  • Mozilla Javascript Manual
• Sensible CSS Guidelines
• R Language (R Language Definition)
• Transact-SQL (T-SQL Reference)
• Procedural Language/PostGres Structured Query Language (PL/pgSQL Manual)
• Python PEP

• Google R Style Guide
• Hadley Wickham R style guide
• Stackoverflow R discussion
• Bioconductor R Coding Standards
• Bioconductor R Package Guidelines
• Colin Gillespie’s R style guide
• Hadley Wickham’s R style guide