Enigma Protector vs ProGuard

Enigma Protector is a licensing and protection system for developers distributing commercial software or shareware as Windows executable files. It supports most 32-bit and 64-bit executable formats, including EXE, DLL, OCX, BPL, and.NET files. Its code and data protection uses encryption and compression alongside obfuscation, mutation, and virtualization to make analysis and modification harder. Licensing can verify registration keys, bind licenses to hardware, or set limits by date, launch count, or usage duration. The Enigma API provides registration-key and trial-status checks and is described for use with languages including C++, Delphi, and Visual Basic. The Online Activation Panel can track orders and automate registration, activation, license-key generation, customer management, and subscriptions. Panel plans range from $24 a month for Light to $59 a month for Premium, with minimum initial payment covering six months. Protector Professional single-developer licenses are $249, paid once; company licenses are $499, paid once. A PHP/MySQL source-code edition for self-hosting costs $890, paid once for a single developer or $2,490, paid once for a company.

ProGuard is a free, open-source command-line tool for shrinking Java bytecode and optimizing code. It processes Java class files by removing unused classes, fields, methods, attributes, and instructions, then renaming remaining classes, fields, and methods with short meaningless names. It also preverifies code, producing smaller and faster applications and libraries. Guardsquare describes ProGuard as suitable for Java and Kotlin apps in mobile, embedded, and desktop environments. Build setup is documented for Android Gradle, Java or Kotlin Gradle, Ant, and Maven projects, and Android's default shrinker, R8, is compatible with ProGuard configuration. ProGuard Playground lets developers experiment with and share keep rules without rebuilding an app. ProGuardCORE is a separate free, open-source library for reading, writing, analyzing, and processing Java bytecode, including Kotlin metadata. Library jars or equivalent paths must be specified as inputs, and ProGuard leaves those libraries unchanged. Code called dynamically through reflection may need to be declared as an entry point in configuration. ProGuard runs on Android, Linux, macOS, and Windows.