Open-source alternatives to AndFix

ET is a C# game server framework and distributed actor model runtime designed for large-scale multiplayer environments. It provides a comprehensive toolkit for building distributed game backends, incorporating a multiplayer network transport layer and a specialized suite for game AI and pathfinding. The framework is distinguished by its use of a distributed actor model to scale processing across multiple threads and servers, utilizing isolated actors for state management and messaging. It features a unified codebase architecture that allows shared logic between the server and client, enabling

Tinker is an Android hotfix framework designed to update application code, resources, and native libraries at runtime without requiring a full reinstallation or store update. It provides a comprehensive engine for injecting runtime fixes and managing the software lifecycle of deployed mobile applications. The framework distinguishes itself through a robust binary patching system that generates compact difference files between application versions, significantly reducing bandwidth usage during distribution. To ensure operational stability, it incorporates a crash-resilient safe mode that autom

radare2 is a reverse engineering framework and binary analysis toolset. It functions as a multi-architecture disassembler, low-level binary debugger, and hexadecimal editor for inspecting executable structures and interpreting machine code when original source files are unavailable. The framework provides capabilities for decompiling machine instructions, performing symbolic analysis, and diffing binary files to identify structural changes across versions. It also includes a digital forensic analyzer and disk analyzer for browsing filesystem formats in userland. The toolset supports binary p

Sparkle is a software update framework for macOS applications. It provides a system for delivering automatic updates using signed archives and RSS-based feeds to notify clients of new software versions. The framework ensures software integrity and authenticity through public-key cryptography, requiring digital signatures for both update archives and release feeds. It includes mechanisms for signing key rotation to maintain the security chain if a private key is lost. To optimize delivery, the project includes tools for generating binary delta updates that ship only the byte-level differences

Objection is a dynamic instrumentation framework and runtime exploration toolkit for mobile application security analysis. It provides a command-line interface to interact with the memory and state of iOS and Android applications during active execution, serving as a toolkit for runtime analysis and security testing. The project distinguishes itself by providing specialized capabilities to bypass common mobile security controls, including SSL pinning, biometric authentication, and root or jailbreak detection. It enables the extraction of sensitive credentials and data from secure storage syst

xLua is a scripting bridge and C++ wrapper used to embed the Lua language into host applications. It facilitates bidirectional data exchange and function calls between scripts and the host environment. The project includes a runtime patching tool for replacing application logic and fixing bugs without requiring a system restart. It features a coroutine orchestrator that wraps asynchronous operations into linear code and a script validator that verifies digital signatures to ensure code authenticity and integrity before execution. To minimize memory overhead and garbage collection, the system

Electrobun is a desktop application framework and webview-based GUI toolkit used for building cross-platform desktop apps. It provides a TypeScript-based runtime and a native system webview to create interfaces that integrate embedded browser views with host-process logic. The project features a native GPU integration layer with direct FFI bindings, allowing for high-performance GPU surfaces and compute workloads to run within a desktop application. It also includes an inter-process communication bridge using a typed RPC system to exchange data and execute functions between the native backend

Diaphora is a binary diffing tool and similarity engine designed to compare compiled binaries and identify changed or matching code sections. It functions as a reverse engineering plugin that maps relationships between functions and detects compilation units using assembler analysis and graph theory. The project specializes in vulnerability patch analysis, allowing users to detect security fixes by comparing different versions of a binary. It synchronizes analysis metadata, such as symbol names and comments, between binaries and generates patches by comparing decompiled pseudo-code. The engi

KBEngine is a distributed game server engine and backend infrastructure designed for massively multiplayer online environments. It provides a multi-process architecture to handle high player concurrency and real-time interactions within a shared virtual world. The system features a scriptable game logic framework that combines a high-performance core with a high-level scripting language. This allows for game behavior modifications through a hot-fixable runtime that updates logic without requiring server restarts. The engine manages server scaling via dynamic load balancing across multiple ha

This project is a command-line utility and development framework designed to modify, extend, and customize the Spotify desktop client. It functions as a binary patching engine that injects custom scripts, stylesheets, and interface components directly into the host application, enabling users to alter visual themes and add new functionality. The tool distinguishes itself by providing a comprehensive development environment for building modular extensions and custom applications. It includes a hot-reloading pipeline for rapid iteration, a declarative library for constructing interactive UI pan

BaiduNetdiskPlugin-macOS is a suite of macOS system extensions and tools designed to remove download speed limits and unlock premium features for the Baidu Netdisk client. It functions as a download speed unblocker and premium feature unlocker to enable maximum data transfer rates and activate SVIP status. The project includes a software update blocker that prevents the client from performing automatic updates to preserve the applied modifications. It achieves these results by removing local data transfer rate restrictions and eliminating trial duration limits.

CloakBrowser is a modified Chromium browser and anti-detect profile manager designed to bypass bot detection and automation signals. It serves as a replacement for standard browser engines in automation frameworks, using source-level binary patching to remove automation flags and spoof internal hardware signals. The project focuses on identity masking through the generation and maintenance of unique hardware and software fingerprints, including canvas noise and screen dimensions. It synchronizes browser timezones and locales with network proxy exit points and replaces programmatic input with

SpotX is a desktop client patcher designed to modify the Spotify application. It functions as an ad-blocking modifier and UI customizer that removes advertisements and promotional content from the music player. The project includes tools to disable automatic updates, ensuring that custom patches and visual themes remain active. It also provides a telemetry blocking patch to prevent the application from sending usage data and analytics to the service provider. The tool enables interface customization to hide specific sections, such as podcasts and audiobooks, from the homepage. These modifica

Psychson is a toolset for modifying USB firmware binaries and flashing custom images to specific hardware controller architectures. It provides utilities for dumping, patching, and flashing custom firmware specifically for Phison 2251-03 USB controllers. The software includes a payload injector for embedding HID keystroke scripts into USB firmware to automate inputs on a target machine. It also features a controller flasher for writing modified burner images directly to Phison-based USB hardware. The suite covers firmware management and hardware forensic analysis, including capabilities for

PE-bear is a graphical portable executable analysis tool designed for inspecting, disassembling, and modifying the structure of Windows PE binary files. It functions as a static analysis framework used to identify malicious patterns and reverse engineer program logic. The project provides a binary diffing tool to identify structural and content differences between two executable files. It also includes a section editor for modifying binary layouts by adding or altering sections and imports. The tool covers a range of binary analysis capabilities, including machine code disassembly, file layo

Bloaty is a binary size profiler and executable format analyzer that attributes every byte of a binary to specific symbols or compile units. It functions as a compilation unit profiler and C++ symbol demangler, mapping binary size back to source files and translating mangled names into human-readable formats. The project distinguishes itself as a binary diffing tool capable of comparing two versions of a binary to isolate specific symbols or sections responsible for size regressions. It provides specialized support for recovering symbols in stripped binaries by associating them with external

Auto-unlocker is a collection of utilities designed to modify virtualization software libraries to bypass system restrictions on guest operating systems. It primarily functions as a binary patcher that enables the selection and booting of macOS guests within VMware. The project modifies core system libraries to unlock hidden operating system selection options and bypass boot checks for unsupported guests. It also includes a guest tools installer that downloads and applies the driver packages necessary for hardware integration and performance. The toolset provides capabilities for managing vi

BepInEx is a Unity game modding framework that enables the injection of custom C# code and external assemblies into running processes without modifying original binaries. It provides a plugin loader and a dependency resolution engine to ensure that external modules are initialized in the correct order based on defined metadata requirements. The framework includes a centralized plugin configuration system for storing and editing custom settings via files and interactive inputs. It also features a runtime object inspector for browsing and debugging active game objects and components within a Un

This project is a Java bytecode reverse engineering suite that functions as a disassembler, decompiler, and editor for Java class files and Android APK binaries. It provides tools to transform compiled bytecode into assembly instructions or readable source code. The toolset supports Android APK analysis and Java binary patching, allowing for the modification of source code or bytecode and subsequent recompilation into functional binaries. It includes capabilities for removing Java obfuscation and performing malware analysis through the detection of malicious code patterns. The system incorpo

JSPatch is a JavaScript native bridge and method swizzler that allows for the dynamic injection of logic into a hosted native environment. It functions as a cross-language data mapper and execution engine, enabling the replacement of native function pointers with JavaScript wrappers to modify application behavior at runtime. The project provides the ability to perform runtime application patching by overriding native class methods and object properties. This allows for the modification of application logic and the application of hotfixes using JavaScript code loaded from local files or remote

MonkeyDev is a developer toolset for building, injecting, and deploying system extensions and custom dynamic libraries into mobile applications. It functions as an application patching tool and dynamic library injector designed to modify how mobile applications operate. The project provides a development environment for creating system extensions and tweaks, including tools for injecting libraries into decrypted binaries to enable debugging and symbol restoration on non-jailbroken hardware. It features a command-line interface for deploying hooks into system processes and third-party applicat

Robust is an Android hotfix framework and runtime application updater designed for patching bugs in production environments. It functions as a bytecode patcher and dynamic code injection tool, allowing for the modification of application logic without requiring a full app update or device reboot. The project enables the remediation of Android defects by injecting new classes and methods into existing builds and modifying the implementations of existing methods. It utilizes a toolchain to generate binary patch files that update application behavior and introduce workarounds on the fly. The sy

This project is an Android application patching tool and Magisk system module generator. It is designed to apply custom modifications to application packages and generate modules that install these patched binaries into the system partition of rooted Android devices. The tool incorporates a root-based application installer that utilizes specialized mounting methods, such as Zygisk application mounting, to bypass root detection warnings and mount errors. It further distinguishes itself by automating the retrieval of application binaries from external mirrors based on specific device architectu

Javassist is a bytecode engineering toolkit for analyzing, modifying, and generating Java bytecode and class files. It functions as a bytecode manipulation library that allows for the editing of class files through either direct bytecode access or high-level source code syntax. The project provides specialized tools for the programmatic creation of new Java classes and interfaces during runtime. It includes a dynamic proxy generator for intercepting method calls and a class loader interceptor that automatically modifies class definitions as they are loaded into the Java Virtual Machine. Addi

LSPosed is an Android runtime hooking framework and system modification tool. It enables the modification of application and system behavior in memory without altering original installation files, serving as a platform for distributing and managing community-created extension modules. The project provides a comprehensive suite for device and identity spoofing, including the ability to mask hardware identifiers, simulate geographic locations, and conceal root access or hooking frameworks to bypass security and integrity checks. It also functions as an application modder to unlock premium featu

This project is an Xcode runtime code injector and developer productivity tool. It enables the injection of Swift and Objective-C code changes into a running application without requiring a process restart, functioning as a hot module replacement tool for iOS development. The tool provides a dynamic UI debugger for reloading storyboards and tuning visual parameters in real time. It allows for the recompilation of individual classes and the binding of new implementations into a live process, avoiding full project rebuilds. The system covers runtime injection capabilities, including automated

Unlocker is a patching tool designed to enable the installation and booting of macOS guest operating systems on non-Apple hardware. It functions as a macOS guest enabler by modifying virtualization software binaries to bypass hardware restrictions and support OS combinations that are not supported by default. The project provides a mechanism to emulate Apple-specific device signatures by intercepting calls between the virtual machine manager and the hardware. It also includes a driver image provider that delivers ISO images containing the necessary utilities and drivers for guest installation