Apps similar to UglifyJS include DomainLockJS, which is free and open source. Other options are Terser, Closure Compiler, JavaScript Obfuscator and YUI Compressor. In total there are six apps like UglifyJS for the web, self-hosting, Mac, Windows and Linux.
DomainLockJS is a free code generator to protect your Javascript files by locking them to your domain. Prevent unauthorized use of your scripts and prevent them from running on unauthorized websites.
The Closure Compiler is a tool for making JavaScript download and run faster. It is a true compiler for JavaScript. Instead of compiling from a source language to machine code, it compiles from JavaScript to better JavaScript.
United States
This webapp can obfuscate your JavaScript with various levels of protection, including: self-defending code, domain lock and debug protection. It's based on a open source (Node.js) project, so you can run on your own server if you like.
Portugal
EU
The goal of JavaScript and CSS minification is always to preserve the operational qualities of the code while reducing its overall byte footprint (both in raw terms and after gzipping, as most JavaScript and CSS served from production web servers is gzipped as part of the HTTP...
