Open-source alternatives to Chromatic

CloverBootloader is a UEFI-compliant boot loader designed to initialize hardware and launch multiple operating systems across various platforms. Its primary purpose is to enable the booting of operating systems on unsupported hardware through system identity spoofing and hardware emulation. The project specializes in hardware compatibility patching by modifying ACPI tables, faking hardware IDs, and patching binary kernels or extensions in memory during the boot process. It provides capabilities to inject kernel extensions and spoof system parameters, such as product names and serial numbers,

Piko is a collection of specialized Android utilities designed for binary patching, user interface customization, media downloading, and application debugging. It functions as an APK modification framework that alters application metadata and binary resources to modify internal logic and bypass version locks. The project differentiates itself through deep application modification capabilities, including bytecode-level instruction patching, DEX file manipulation, and a dynamic hooking engine. It enables the overriding of resource files and the injection of permissions via the application manif

vgpu_unlock is a set of software tools and driver modifications designed to unlock enterprise-grade virtualization features on consumer graphics hardware. It functions as a vGPU unlock tool and hardware device ID spoofer that allows a single graphics card to be shared across multiple virtual machines. The project achieves this by employing driver-level hooking, dynamic memory patching, and kernel-level device spoofing. These techniques intercept hardware identification queries and modify the operational state of the GPU driver at runtime to bypass manufacturer-imposed software restrictions.

Dobby is a dynamic function hooking framework and binary instrumentation tool designed to intercept and redirect function calls in compiled binaries. It serves as a cross-platform and cross-architecture library that provides a unified interface for modifying program execution flow across different operating systems and CPU architectures. The library enables low-level binary instrumentation and runtime application instrumentation by injecting custom handlers into live processes. It is used for software reverse engineering to observe real-time data flow and logic by hooking internal functions.

This project is an Android security analysis toolkit and mobile app runtime manipulator designed for reverse engineering and auditing mobile applications. It provides a system for modifying Java classes and method behavior in active mobile processes to bypass security controls. The toolkit includes a web-based interface for controlling the instrumentation engine and a specialized utility for disabling certificate validation to intercept and inspect encrypted network traffic via SSL pinning bypass. It also features an Android file explorer for browsing and managing files within private data di

Lilu is a kernel patching engine and runtime code injection framework designed to modify kernel drivers and libraries in memory. It functions as an operating system customization framework that intercepts function calls and redirects execution flow within the kernel to resolve hardware compatibility issues and adjust system stability. The project employs a modular platform that allows for the injection of code and the modification of system libraries during the boot process without altering files on disk. It utilizes a plugin-based extension architecture and a standardized API interface to lo

VirtualApp is an Android application virtualization engine and user-space sandbox that enables the execution of applications within an isolated environment. It allows for the running of multiple independent instances of the same application on a single device and supports private application installation without requiring system-level root access. The project features a comprehensive hooking framework for intercepting Java and native layer functions to modify application behavior. It includes tools for hardware simulation to spoof device models and system information, as well as a non-root pr

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

This project is a Java runtime diagnostic tool and bytecode instrumentation framework. It provides a remote troubleshooting interface for inspecting live Java systems, analyzing execution traces, and monitoring method performance without requiring application restarts. The system distinguishes itself through its ability to modify Java classes at runtime to capture parameters and return values, combined with a JavaScript-based scripting engine for custom diagnostic logic. It further supports collaborative live debugging, allowing multiple users to connect to a single remote process simultaneou

REFramework is a runtime modding framework for games built on the RE Engine, providing a C# plugin system with typed proxy code generation, a Lua scripting interface, an ImGui-based UI system, a runtime debugging toolkit, and a VR integration layer. At its core, it intercepts and modifies internal game engine functions and state at runtime through hooking and scripting APIs, enabling deep inspection and manipulation of live game objects. The framework distinguishes itself through typed proxy code generation that auto-creates C# interfaces from the game's type database, giving compile-time saf

TShock is a server management tool and plugin framework for dedicated Terraria servers. It functions as an administrative suite and anti-cheat tool designed to control player permissions, monitor game integrity, and extend server functionality. The project provides a framework for creating custom plugins that modify the game world and implement new commands. It enables internal state modification through bytecode injection, packet interception, and memory manipulation to bypass engine restrictions and alter live game environments. Administrative capabilities include a hierarchical role-based

r0capture is a tool for intercepting network traffic from Android applications. It serves as a traffic interceptor, packet sniffer, and client certificate exporter used to analyze application-layer communication on Android devices. The project provides mechanisms to bypass SSL pinning and certificate validation, allowing the decryption of encrypted traffic without modifying device trust stores. It also enables the extraction of client-side certificates from application memory for saving to local device storage. Captured network data is serialized into PCAP files to support offline protocol a

Windhawk is a Windows OS modding framework and user-mode code injector designed to customize the behavior of Windows applications and system components. It functions as a process customization tool and API hooking engine that allows for the insertion of custom logic into running programs. The framework enables software behavior modification and user interface tweaking without requiring access to the original source code. This is achieved by intercepting function calls and altering how software interacts with the operating system to implement patches or feature enhancements. The system covers

Xposed is a native Android runtime hooking framework and instrumentation tool. It provides a modified version of the Android app process binary to intercept and modify the behavior of system and application processes at the binary level. The framework enables Android operating system customization by altering internal function calls and runtime execution flow. It achieves this through native process instrumentation, allowing for the modification of functionality without altering original application files. The tool covers several low-level capabilities, including native library injection and

unidbg is a framework for emulating and debugging ARM32 and ARM64 native binaries on a host machine. It serves as an Android and iOS binary debugger and native library emulator, allowing for the execution of native code without the need for physical hardware. The project distinguishes itself through a native function hooking framework and a Model Context Protocol debugging tool that exposes emulator state to AI assistants for automated binary analysis. It also includes a specialized memory analyzer for tracking guest-side allocations and identifying leaks in native binaries. The toolset cove

Remote Desktop Control is a Java-based platform designed for remote desktop administration and system management. It enables users to access and control distant computers by streaming real-time screen imagery and relaying keyboard and mouse inputs between a controller and a target machine. The system distinguishes itself through a modular architecture that supports dynamic command handler injection and pluggable input drivers, allowing for functional extensions without modifying the core application. To ensure connectivity across restrictive firewalls and diverse network environments, the pla

OpenLLMetry is an OpenTelemetry-based observability framework and instrumentation library for generative AI applications. It provides toolsets for tracing and monitoring large language model workflows, capturing telemetry from model providers, agent frameworks, and vector databases using standardized semantic conventions. The project distinguishes itself by providing a specialized evaluation and experimentation suite that associates user feedback and prompt version hashes with specific execution traces. It includes a system for tracking model reasoning paths and enforcing security guardrails

This project is a JavaScript-based plugin framework for the Typora markdown editor. It provides a development platform to integrate custom functional logic, UI elements, and keyboard shortcuts into the editor environment. The framework distinguishes itself by offering a JSON-RPC remote interface, allowing external programs to control the editor and trigger plugin functions. It also includes a dedicated publishing system to export and upload markdown documents to external blogging platforms via API requests. The project covers a wide range of capabilities, including editor workflow automation

This repository is a collection of JavaScript coding challenges and a comprehensive interview guide. It provides reference implementations and educational examples designed to help developers master language fundamentals and prepare for technical interviews. The project covers a wide array of specialized implementations, including functional programming patterns like currying and partial application, as well as asynchronous patterns for concurrency control. It also includes practical examples of Document Object Model manipulation and the implementation of common data structures such as stacks

OptiScaler is a DirectX graphics middleware and temporal upscaler wrapper designed to intercept graphics API calls. It functions as a system for replacing native temporal anti-aliasing and upscaling technologies with alternative scaling methods and frame generation interop to improve resolution and performance. The project distinguishes itself by enabling modern high-resolution upscaling and frame generation in games built for legacy rendering standards. It includes a framework for importing low-latency graphics plugins and utilizes an interception layer to replace existing frame interpolatio

HyperDbg is a hardware-assisted kernel-mode debugging platform that leverages virtualization to monitor and control system execution. By utilizing hypervisor-level primitives, it enables deep system analysis and instrumentation without relying on standard operating system debugging interfaces. The framework provides a comprehensive environment for inspecting both kernel and user-mode processes, allowing for granular control over execution flow and system state. The project distinguishes itself through a transparent debugging layer designed to remain invisible to the target environment. It emp

Premake is a build system generator and cross-platform build configuration tool. It functions as a scripting engine that transforms scripted workspace definitions into native project files for multiple build toolsets and compilers. Additionally, it can generate JSON-formatted compilation databases for use with language servers and static analysis tools. The project distinguishes itself through a programmable runtime that allows for internal function hooking and the interception of build logic. This extensibility enables users to create custom toolset generators, implement modular extensions f

Freezegun is a Python time mocking library and system clock emulator used to freeze the system clock to a fixed date and time. It serves as a testing utility to ensure that time-dependent logic produces consistent and predictable results during software verification. The library provides an asyncio compatible mock that preserves real monotonic clock values to prevent event loops from hanging while other system time functions remain frozen. It supports simulating the passage of time through manual clock advancement, jumping to designated dates, or using a ticking clock simulation that incremen

Tape is a JavaScript testing framework and assertion library that serves as a test runner for Node.js and browser environments. It implements the Test Anything Protocol to provide a standardized, machine-readable format for test results. The project functions as a cross-environment test harness, allowing the same test suites to be executed across both server-side and client-side environments while maintaining a consistent output protocol. Its capabilities include validating value equality and truthiness, verifying exception handling, and coordinating asynchronous workflows. The framework als