The article lists the top 15 must-have tools for JavaScript developers in 2024, including frameworks, debuggers, and text editors. These tools are Sublime Text, Gulp, NPM, Webpack, ESLint, Jasmine, Browserify, Mocha, QUnit, Code Orchestra, CircleCI, Travis CI, Codeship, Appveyor, and Jenkins. Additionally, the article mentions 100+ free online tools from LambdaTest for developers and testers, covering HTML, XML, JSON formatters, data generators, hash calculators, and more.