Code Virtualizer vs JS-Confuser

Code Virtualizer is a code-protection tool for developers seeking to make selected application, library, or driver code harder to reverse engineer. It transforms x86, x64, or ARM64 instructions into virtual opcodes interpreted by an internal virtual machine; each protected application receives its own opcodes and machine. It supports native PE, ELF, and Mach-O files, including executables, services, DLLs, shared objects, and device drivers. Developers mark protected sections with macros from VirtualizerSDK.h. Listed capabilities include multiple virtual machines, code relocation, an advanced mutation engine, and command-line protection. The maker says the product works with any compressor or protector. It runs on Windows, macOS, and Linux. A demo is available but cannot be registered; it offers light virtualization, omits string encryption, mutate macros, and compressed virtual machines, and adds a demo splash screen. The Developer License (x86/x64) costs €199 as a one-time purchase, and other licenses are listed for different developer counts and ARM64 use. Purchases include one year of updates and email support.

JS-Confuser obfuscates JavaScript to make source code harder to understand, copy, reuse, or modify while preserving its functionality. Its browser playground accepts pasted code, lets users choose settings, and produces a downloadable result. The playground runs in the browser, including offline, and says it does not send code or actions to a remote server. Users can start with Low, Medium, or High presets or create custom configurations. Options include renaming variables, concealing strings, flattening control flow, inserting dead code, setting domain or date locks, and tamper protection. The API offers JSConfuser.obfuscate for source code and JSConfuser.obfuscateAST for Babel ASTs; output targets include Browser and Node.js. The editor includes Prettier and a JSON representation of JSConfuser.ts settings. JS-Confuser is described by its maker as free and open source. Obfuscation can increase file size and performance overhead or break a program, and it cannot prevent determined reverse engineers from recovering code or sensitive information. Tamper protection requires eval and non-strict mode.