Feri - The easy to use build tool for web files.
Parcel - Blazing fast, zero configuration web application bundler
Gulp.js - Automate and enhance your workflow
Grunt - The Grunt ecosystem is huge and it's growing every day.
Webpack - Webpack is a module bundler. Its main purpose is to bundle JavaScript files for usage in a browser, yet it is also capable of transforming, bundling, or packaging just about any resource or asset.
RequireJS - RequireJS is a JavaScript file and module loader.