Open-source alternatives to Javascript Obfuscator

Al-Khaser is a research project focused on the development of anti-analysis and evasion techniques to resist reverse engineering. It provides implementations for detecting and evading virtual machines, sandboxes, and debuggers to prevent software analysis. The project implements control flow obfuscation through anti-disassembly methods and utilizes dynamic API resolution to bypass static import tables. It further hinders forensic analysis by manipulating memory headers to prevent process dumps and utilizing remote code injection to execute logic in external processes. The capability surface

Hercules is a security tool designed to protect Lua source code from reverse engineering and unauthorized analysis. It functions as a code transformation engine that secures application logic by applying multiple layers of obfuscation, including control flow manipulation and the wrapping of scripts within a custom virtual machine environment. The project distinguishes itself through a multi-stage pipeline architecture that allows for the development of custom, multi-layered protection strategies. By replacing standard language instructions with custom opcodes and reorganizing linear code into

electron-vite is a build system and multi-process bundle orchestrator that uses Vite to compile and bundle the main, preload, and renderer processes for Electron applications. It functions as a desktop application scaffolder, providing templates to integrate various frontend frameworks into a standardized project structure. The project distinguishes itself through integrated source code protection, utilizing a V8 bytecode obfuscator to compile JavaScript into bytecode and obfuscate strings to prevent reverse engineering. It also manages complex desktop architectures by isolating bundles and s

Movfuscator is an obfuscating compiler that transforms C source code into x86 machine code consisting exclusively of move instructions. It implements all program logic, arithmetic, and control flow using a move-only instruction set to hide the execution path and prevent reverse engineering. The project includes a move-only library that performs double precision floating point calculations without using native floating point instructions. It also features a translator that converts these move-only binaries into restricted data transfers and indexed addressing for compatibility with RISC archit

UglifyJS2 is a suite of tools designed for parsing, beautifying, mangling, and minifying JavaScript code. It functions by converting source code into an abstract syntax tree to enable programmatic analysis and transformation, and it includes a dedicated generator for creating associated source maps. The project optimizes web production builds by compressing script logic and removing unreachable code. It utilizes name mangling to shorten variable and property names and implements a beautifier to reconstruct compressed scripts into a human-readable layout. The toolset covers broad capability a

This project is a JavaScript optimizer, minifier, module bundler, transpiler, and static analysis tool. It provides a compilation pipeline designed to shrink file sizes and improve runtime performance. The system utilizes a multi-pass compilation process to perform dead code elimination, global name mangling, and static type inference. It identifies unreachable functions and unused variables to reduce the final output size and detects potential runtime errors without executing the code. The tool manages assets through dependency resolution, code chunking, and bundle management. It ensures co

Recast is a JavaScript AST parser and printer designed for automated code refactoring. It converts source code into abstract syntax trees that can be modified and then printed back into source code. The project focuses on formatting-preserving transformations, storing original whitespace and indentation metadata within syntax tree nodes to reconstruct code without losing its original layout. It also generates character-level source maps to maintain precise correspondences between original input and transformed output. The toolkit includes utilities for syntax tree manipulation using a visito

Terser is a JavaScript minifier and compressor designed to reduce file size through whitespace removal, symbol mangling, and logic optimization for ES6+. It functions as a toolkit for minification, a code mangler for shortening variable and property names, and a dead code eliminator that evaluates constant expressions to remove unreachable logic. The project operates as an AST toolkit that parses JavaScript source into SpiderMonkey AST format for structural analysis. It generates source maps to link compressed production code back to the original source, ensuring that minified bundles remain

UglifyJS is a tool for JavaScript code minification, AST manipulation, and source beautification. Its primary purpose is to reduce the file size of JavaScript source code by removing whitespace and shortening variable names to optimize frontend build assets. The project differentiates itself through its ability to programmatically analyze and transform code using abstract syntax trees. It performs constant folding analysis and conditional compilation to eliminate unreachable or redundant code, and it employs a multi-pass compression pipeline to maximize total file size reduction. The tool pr

Clean-CSS is a Node.js CSS optimizer and minifier designed to reduce stylesheet file sizes and improve web performance. It functions as a CSS post-processor that removes unnecessary whitespace, comments, and redundant properties from stylesheets. The project utilizes an abstract syntax tree for parsing and a multi-pass optimization pipeline to restructure rules and simplify properties. It features a plugin interface for custom style transformations and provides compatibility-aware minification to ensure styles remain functional across specific legacy browser versions. Additional capabilities

This project is an AST-based code optimizer and compressor for modern ECMAScript, JSX, and TypeScript source code. It functions as a JavaScript minifier that uses the Babel toolchain to reduce file size by removing unnecessary characters and whitespace while preserving program logic. The tool is distinguished by its ability to process experimental language proposals and transform modern syntax into browser-compatible versions. It provides specialized handling for React JSX transpilation and strips type annotations from TypeScript files to produce compressed production assets. The system cove

ts-jest is a TypeScript compilation tool and transformer that enables the Jest testing framework to execute tests written in TypeScript. It functions as a bridge that transpiles typed source code into executable JavaScript while maintaining the necessary integration for test runner execution. The project distinguishes itself by providing on-the-fly type diagnostics and pre-test type validation to identify structural errors before the execution phase. It includes a source map handler that links compiled JavaScript output back to the original TypeScript source lines to ensure accurate error sta

Pyarmor is a toolset for protecting Python software through source code obfuscation, bytecode protection, and binary compilation. It functions as a code obfuscator, bytecode protector, and binary compiler designed to prevent reverse engineering and unauthorized access to Python scripts and packages. The project distinguishes itself by providing a comprehensive software license manager that enables hardware-bound licensing. This allows developers to lock script execution to specific physical devices or virtual machines and enforce strict expiration dates via encrypted runtime keys. Its broade

jsfuck is an esoteric programming language and JavaScript source obfuscator. It functions as a code encoder that transforms standard JavaScript source code into a functional equivalent composed of a minimal character set. The project restricts its source code to six specific characters to hide logic and bypass security filters that block standard alphanumeric characters. It achieves this by using type coercion to derive symbols and accessing internal language objects through prototype manipulation. The system enables arbitrary JavaScript execution by converting strings into executable functi

TIC-80 is a fantasy console platform and multi-language game engine that provides a virtual retro game development environment. It operates via a bytecode virtual machine that executes game logic within fixed memory and resolution constraints. The project distinguishes itself by offering integrated asset editors for pixel art, tile maps, and a pattern-based chiptune audio workstation all within a single environment. It supports multi-language scripting, allowing developers to write logic in Lua, JavaScript, or Ruby, and provides a standalone game exporter to package projects into native execu

Luau is a high-performance programming language evolved from Lua 5.1. It consists of a bytecode virtual machine, an embeddable scripting engine, and a static code analyzer designed to provide a secure, sandboxed execution environment for host applications. The project is distinguished by its gradual typing system, which combines automatic type inference with optional manual annotations to detect bugs without requiring full static typing. It also features native vector mathematics for high-performance operations and a specialized debugging system that uses bytecode patching to minimize executi

pkg is a Node.js executable packager and cross-platform binary compiler. It bundles a project and its dependencies into a single standalone binary, allowing applications to run on machines without a pre-installed runtime. The project distinguishes itself by precompiling JavaScript source code into bytecode to remove human-readable text and obfuscate the logic. It utilizes a virtual filesystem bundler to embed static assets and non-javascript files directly into the executable, employing compression algorithms to reduce the final binary size. The tool covers cross-platform compilation for var

Mimic is a unicode homoglyph generator and text obfuscation tool. It functions as a character substitutor that replaces standard ASCII characters with visually similar Unicode symbols to create text that appears correct to humans but is functionally different. The project is used for source code obfuscation by inserting subtle syntax errors into code to hide intent or break automated analysis. It also serves as a tool for textual adversarial testing to evaluate the resilience of software filters against maliciously crafted input. The utility achieves these results through a mapping system th

Shumway is a browser-based Flash emulation system designed to execute Shockwave Flash content without the need for native plugins. It focuses on the preservation of legacy Flash content by rendering SWF files within modern web browsers. The project utilizes a JavaScript-based virtual machine to parse and execute SWF bytecode, recreating the original program logic. This environment simulates a CPU and memory layout to enable the display and playback of interactive animations and applications. The system manages a software-based rendering pipeline that draws vector shapes and bitmaps onto a ca

Cinder is a high-performance Python runtime implementation based on CPython. It is designed as an execution environment optimized for large-scale distributed systems and cloud environments. The project integrates a distributed memory cache and an asynchronous memory layer to manage data across multiple network nodes. It also provides a native C extension framework for developing high-performance compiled modules that link directly into the interpreter memory space. The system covers capabilities for asynchronous data retrieval, large-scale execution, and the integration of embedded scripting

This project is a technical handbook and tutorial guide for the Babel compiler. It serves as a resource for configuring the tool and writing custom plugins to transform JavaScript source code. The guide provides instructional material on creating custom transformation plugins and modifying the compilation process. It specifically covers how to navigate and modify abstract syntax trees to programmatically rewrite source code. The documentation covers the mechanics of code transformation, the management of compiler configurations, and the fundamentals of compiler tooling. It includes guidance

IREE is an MLIR-based compiler toolchain and runtime designed to translate machine learning models from various frameworks into optimized binaries for execution across diverse hardware targets. It provides a unified pipeline to ingest models from PyTorch, TensorFlow, JAX, and ONNX, lowering them into a common intermediate representation for deployment on CPUs, GPUs, and bare-metal embedded systems. The project distinguishes itself through a bytecode virtual machine and a hardware abstraction layer that decouple high-level model logic from specific hardware instruction sets. It supports sophis

Lebab is a JavaScript code modernization tool that converts older ES5 syntax into contemporary ES6 equivalents. It operates as a source-to-source transpiler, parsing code into an abstract syntax tree, applying structural transformations, and regenerating the output without intermediate representations or runtime dependencies. The tool distinguishes itself through a rule-driven pipeline of independent transformation rules, each targeting a specific ES6 feature like arrow functions, let/const, classes, or modules. It provides a programmatic API that accepts source code and an array of transform

This is the original C source code for the Quake game engine, a landmark first-person shooter engine from the 1990s. It is a retro game engine that renders 3D environments and processes player input in real time using CPU-based software rendering rather than GPU acceleration. The engine supports networked multiplayer gameplay over LAN or internet connections and is designed to be moddable, allowing users to create and run custom game modifications and levels. The engine's architecture includes a Binary Space Partition tree for efficient world geometry organization and visibility determination

Tengo is a dynamic, embeddable scripting language for Go applications that allows for the execution of custom scripts without requiring the host binary to be recompiled. It operates as a bytecode-compiled virtual machine, transforming source code into a compact intermediate representation for execution on a stack-based engine. The system is designed as a secure scripting sandbox, enforcing strict limits on memory allocation and execution time to safely run untrusted code. It supports concurrent script execution by cloning compiled bytecode and using recursive immutability conversion to share

Expr is a high-performance expression evaluation engine and language for Go applications. It functions as a dynamic rule engine that parses and executes custom logic and data validations at runtime without requiring the application to be recompiled. The system utilizes a sandboxed logic executor to run expressions without side effects. It ensures program termination by employing instruction-level loop detection to prevent infinite loops and isolates the evaluation process from the host system. The engine employs a bytecode-based virtual machine and abstract syntax tree analysis to achieve ex

This project is a framework for building, manipulating, and analyzing abstract syntax trees. It provides a toolkit for defining, traversing, and validating syntax trees that are compatible with the Mozilla Parser API, serving as a foundation for static code inspection and automated transformation tasks. The library distinguishes itself through a declarative type system that enforces structural integrity across node hierarchies. By wrapping raw syntax nodes in context-aware objects, it enables developers to track parent relationships and ancestor chains without modifying the underlying tree st