Open-source alternatives to PS2Recomp

dnSpy is a desktop application designed for the analysis, debugging, and modification of compiled .NET assemblies. It functions as an assembly analysis suite and decompiler, translating binary instruction streams back into readable source code to facilitate reverse engineering when original source files are unavailable. The tool distinguishes itself through an integrated binary patching engine and metadata editor, which allow for the direct modification of executable logic and internal metadata tables. It supports in-process debugging instrumentation, enabling users to inject runtime hooks, s

RevokeMsgPatcher is a binary patching utility designed to modify the execution logic of desktop messaging applications. By applying low-level changes to compiled executable files and libraries, the tool enables functionality not natively supported by the original software, specifically focusing on message persistence and process management. The utility distinguishes itself through targeted binary instrumentation and control flow redirection. It identifies specific function patterns and memory offsets within proprietary software to inject custom assembly instructions. These modifications allow

UnleashedRecomp is a legacy software modernization project that uses static binary recompilation to enable native execution on Windows and Linux. Its primary purpose is to remove the need for emulation while updating old applications to support modern hardware and high-resolution displays. The project implements a game modding infrastructure that allows for the loading of external assets and custom software tweaks using standardized modification formats. It also includes an achievement tracking system that mirrors original platform notifications and a dedicated menu for monitoring progress.

Open-smartwatch-os is an operating system designed for resource-constrained wearable devices. It provides a development and testing environment that allows developers to build, validate, and debug firmware for smartwatches within a simulated desktop environment before deploying to physical hardware. The project distinguishes itself through a comprehensive suite of tools for hardware emulation and remote diagnostics. By utilizing a hardware abstraction layer and modular driver architecture, it decouples core system logic from specific physical components. This enables developers to run the ope

MAME is a vintage hardware emulation platform designed to recreate the circuitry of arcade games, computers, and consoles to run original software on modern devices. It functions as a retro gaming preservation framework for managing, verifying, and archiving ROM sets and disk images to ensure long-term software accessibility. The project features a system debugging tool for inspecting emulated memory, CPU registers, and execution flow via breakpoints and disassembly. It also includes a Lua-based automation layer that exposes core system state and hardware controls for custom behavior and anal

Dolphin is a software environment that simulates GameCube and Wii console hardware, allowing users to execute game discs and digital software on modern computing platforms. It functions by translating original console processor instructions into native host machine code at runtime and intercepting low-level graphics commands to render them through modern graphics APIs. The project distinguishes itself through a comprehensive netplay engine that enables online multiplayer for local games by synchronizing game states and input timing across remote instances. This system enforces deterministic e

This project is an educational resource and virtual environment designed to teach the fundamentals of embedded systems and internet-connected device development. It provides a structured curriculum that guides learners through the essential skills required to program, connect, and integrate hardware components. The platform distinguishes itself by offering virtual hardware emulation, which allows users to test electronic circuits and device logic within a digital environment. This simulation capability enables students to practice building and testing projects without the requirement for phys

UTM is a comprehensive virtualization suite that provides a unified interface for running guest operating systems on host hardware. It functions as a cross-platform system emulator and hypervisor, coordinating both hardware-accelerated virtualization and software-based instruction emulation to execute diverse operating systems. By leveraging native kernel-level virtualization frameworks, the software achieves near-native performance while maintaining strict security through sandboxed process isolation. The project distinguishes itself by enabling full-featured desktop operating systems to run

This project is a cross-platform emulator designed to execute software originally developed for the PlayStation 2 console on modern computing hardware. By replicating the original processor and graphics architecture, it allows users to run legacy game discs and digital backups within a virtual environment on contemporary desktop and laptop systems. The software distinguishes itself through advanced graphics enhancement engineering, which enables users to adjust rendering resolutions, apply texture filtering, and utilize community-created patches to improve visual fidelity beyond original hard

Tiny-gpu is an educational hardware emulator designed to model the fundamental operations of a graphics processing unit. It provides a software environment that simulates hardware data flow and parallel computing logic, allowing users to visualize the internal execution cycles and memory structures characteristic of graphics hardware. The project distinguishes itself by implementing a cycle-accurate execution model that tracks the progression of operations through discrete processing steps. It utilizes a fixed-function pipeline to process geometric data through sequential transformation and r

PyBoy is a programmable Game Boy emulator and hardware simulation framework written in Python. It functions as an emulation engine that allows users to execute original handheld software while providing a programmatic interface to control, probe, and automate game execution. The project is specifically designed as a reinforcement learning environment, exposing emulator states and controls to facilitate the training of machine learning agents. It distinguishes itself by providing tools for game area mapping and the extraction of simplified 2D screen representations and collision maps to suppor

touchHLE is a high-level emulator designed to run legacy iPhone OS applications and games on modern desktop and mobile operating systems. It functions by simulating the original hardware environment and operating system API calls rather than emulating underlying CPU instructions. The project focuses on the preservation of early third-party mobile software through legacy archiving. It distinguishes itself by translating modern mouse, keyboard, and controller inputs into simulated touch gestures and accelerometer data, and by connecting multiple emulator instances over a local network to enable

Virtual-Display-Driver is a kernel-level driver for Windows that emulates physical monitors and audio devices. It serves as a virtual monitor emulator, headless server display emulator, and virtual audio device driver to enable extended desktop space and sound routing on systems without physical hardware connections. The project enables the simulation of monitors with custom resolutions, refresh rates, and identification profiles, including support for High Dynamic Range output. It also provides software-defined audio interfaces to simulate virtual microphones and speakers. The software cove

Bitwise is a computer architecture education kit and a comprehensive set of guides for building a custom CPU, operating system, and compiler from scratch. It serves as a CPU design tutorial and a practical framework for implementing a unique instruction set architecture. The project provides a custom instruction set architecture toolchain, including resources for creating a matching assembler and compiler. It further includes a hardware development guide for synthesizing computer components and peripheral controllers for deployment on programmable logic devices and FPGAs. The kit covers full

Box86 is a Linux userspace emulator and instruction translator designed to run x86 binaries on ARM-based devices. It functions as a hardware compatibility layer that simulates an x86 environment, allowing software built for different processor architectures to execute on ARM Linux. The project utilizes a dynamic recompiler to translate x86 opcodes into native ARM instructions at runtime, increasing execution speed over standard interpretation. To further improve performance and stability, it wraps native system libraries and Vulkan drivers, redirecting architecture-specific calls to native ho

This project is a digital library and archive of vintage Chinese language DOS games. It provides a curated collection of historical software preserved for access through a web-based emulation platform and a searchable game catalog. The system utilizes a decentralized repository to host and share game data files across a peer-to-peer network. This ensures assets are retrieved using content-addressable hashes rather than relying on central servers. Users can execute games directly in a web browser via a DOS emulation engine or use provided scripts to download and configure game archives for lo

The WebAssembly Binary Toolkit is a suite of tools for inspecting, validating, and transforming WebAssembly modules between binary and human-readable representations. It includes a stack-based interpreter for executing modules and a transpiler that converts binary files into C source code and headers. The toolkit provides utilities for assembling human-readable text into binary modules and disassembling binary files back into text. It features a text formatter for normalizing definitions into a canonical flat representation and supports the conversion of binaries into S-expression formats. T

OpenLara is an open-source game engine and classic game emulator designed to load and execute original game data files from classic action-adventure titles. It functions as a cross-platform game runtime that enables legacy game assets to run on modern hardware and operating systems. The engine features a deterministic physics system using fixed-point coordinate math to ensure consistent movement and behavior across different hardware environments. The project incorporates a component-based entity system and a data-driven level loading process to reconstruct world geometry and object placemen

Julius is a cross-platform game engine and simulation tool designed for the reimplementation of legacy games. It executes original game logic using the original assets while applying modern resolution and interface updates. The engine features a localization framework for integrating community translations of text, audio, and video, and an integrated scenario editor for configuring gameplay rules and resource requirements within map data files. The project covers a broad capability surface including save game management with automated backups, input mapping for diverse keyboard layouts and t

86Box is a low-level x86 hardware emulator and vintage PC simulator designed to replicate early IBM PC compatibles. It provides virtualized environments for executing legacy operating systems, such as MS-DOS and early versions of Windows, by simulating processors and system designs ranging from the 8086 through the Pentium era. The project distinguishes itself through cycle-accurate processor simulation and high-fidelity hardware emulation. This includes the ability to route retro MIDI audio data to emulated hardware modules or external synthesizers to achieve authentic audio playback from le

The Mobile Application Security Testing Guide is a comprehensive manual and compliance framework for verifying the security of mobile applications. It provides a standardized reference for identifying and validating common software security weaknesses and performing reverse engineering based on industry standards. The project provides a structured set of technical processes and checklists used to audit applications against established security weakness enumerations. It encompasses guidance for analyzing application binaries and runtime behavior to identify hidden functionality and security ga

JPEX Software is a comprehensive reverse engineering suite for SWF binary files, serving as an ActionScript decompiler and editor. It provides a toolkit for decompiling, analyzing, and modifying the internal structure of compiled Flash content, including the extraction of scripts and media assets. The project is distinguished by its ability to perform direct binary modification, allowing users to edit bytecode and replace embedded resources without reverting to high-level source code. It includes a runtime ActionScript bytecode debugger for variable inspection and call stack analysis, as well

This project is a comprehensive technical guide and course for reverse engineering iOS applications. It serves as a manual for dissecting mobile binaries using disassembly and debugging tools to analyze internal application logic and behavior. The material functions as a reference for ARM assembly and Objective-C theories, providing the necessary framework to translate low-level machine code into human-readable logic. It combines theoretical study with practical exercises to validate the use of reverse engineering tools on real-world binaries. The scope covers static binary analysis, dynamic

SpaceCadetPinball is a reverse-engineered, cross-platform port of the classic 3D Pinball - Space Cadet game, rebuilt from the original binary without access to its source code. It functions as an asset-driven pinball emulator that loads the original game data files to recreate the authentic visual and audio experience on modern hardware, preserving the legacy title through binary-to-source porting and reverse engineering. The project distinguishes itself by reconstructing the game's logic through runtime analysis of the original compiled instructions, translating them back into readable C++ c

lensm is a binary analysis tool and Go disassembler interface designed for navigating disassembled machine code, tracking function calls, and inspecting executable metadata. It specifically functions as a Go assembly viewer that visualizes compiled binary instructions alongside their original source code. The project implements the Model Context Protocol to expose internal functions and source code as tools for external AI systems. This protocol-based analysis server enables the streaming of binary data and the management of server lifecycles to allow external tools to analyze logic. The sys

Android Classyshark is a binary analysis toolset designed to extract structural data from Android executable files. It functions as a bytecode viewer and binary XML parser to analyze compiled Java and Android binaries. The project converts binary XML files into readable formats for the inspection of application manifests, layouts, and resource files. It also provides the ability to analyze class interfaces, members, and dependency counts without requiring access to the original source code. The toolset supports static analysis and the export of binary information into plain text formats for

LIEF is a framework for parsing, modifying, and analyzing executable binary formats and system shared caches across multiple platforms. It serves as a cross-platform library for the programmatic manipulation of ELF, PE, and MachO binary files. The project provides tools for altering the internal structure and sections of executable files to change program behavior. It also includes a dedicated parser for recovering individual dynamic libraries from combined system shared caches. The toolset covers binary executable analysis, machine code disassembly, and the extraction of debug metadata and