- W3C coding standards: https://www.w3.org/standards/
- USA government’s design principles: https://designsystem.digital.gov/
- Canadian government’s design principles: http://tbs-sct.gc.ca/ws-nw/index-eng.asp
- The UK government’s design principles: https://www.gov.uk/guidance/government-design-principles
- Google’s opinionated reference for building amazing web experiences: https://developers.google.com/web/fundamentals/
- Webkit code style guidelines: https://webkit.org/code-style-guidelines/
- Mozilla coding style guide: https://developer.mozilla.org/en-US/docs/Mozilla/Developer_guide/Coding_Style
- Microsoft Edge coding style guide: https://docs.microsoft.com/en-us/microsoft-edge/dev-guide/whats-new/edgehtml-16
- WordPress coding standards: https://codex.wordpress.org/WordPress_Coding_Standards
- Drupal coding standards: https://www.drupal.org/docs/develop/standards
- Joomla coding standards: https://developer.joomla.org/coding-standards/introduction.html
- “Digital Design Standards aspires to be the de facto guide for the design industry’s best practices as applied to the web”: http://digitaldesignstandards.com/
