validation

• Exalt

  by eerohele ST3 16K Installs
  A Sublime Text plugin for validating and formatting XML documents

• JsValidate

  by duereg 12K Installs
  Validate the syntax of any JavaScript file in Sublime Text using Esprima

• Pretty EDN

  by Chris Oakman ST4 MacLinux 807 Installs
  Format, Validate, Minify EDN files in Sublime Text

• Pretty JSON

  by dzhibas Top 25 1.32M Installs
  Prettify/Minify/Query/Goto/Validate/Lint JSON plugin for Sublime Text 3 & 4

• W3CValidators

  by ericsorenson 57K Installs
  W3C markup validator package for the Sublime Text 2 text editor.