Gulp.js Alternatives for JavaScript

Rome is a free and open-source JavaScript build tool that has strong conventions and aims to have minimal configuration. The toolset includes a linter, compiler and bundler for JavaScript, TypeScript, JSON, HTML, Markdown, and CSS. Rome has zero dependencies, and has largely been written from scratch by people from Facebook.

Webpack is an open-source module bundler for JavaScript. 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. It can transform front-end assets like HTML, CSS, and images where corresponding loaders ar included and takes modules with dependencies and generates static assets representing those modules.

Grunt is an open-source JavaScript task runner, a tool used to automatically perform frequent tasks such as minification, compilation, unit testing, and linting. The Grunt ecosystem contains hundred of plugins that can be used to automate just about anything build related. With Grunt, you use the command-line interface to run custom tasks defined in a your config file to optimize your development workflow.

Bower provides hooks to facilitate using packages in your tools and development workflows. With Bower, you can optimize and build front-end code to follow the flat dependency graph and to help reduce page load. Bower is released free and open-source under the 

NPM is the most popular package registry for JavaScript and Node.js packages. It is relied upon by more than 11 million developers worldwide and has become the center of JavaScript code sharing. Currently NPM hosts over 1 million packages and is considered the largest software package registry in the world.