Open Source C Runtimes

The mingw-w64 project is a complete runtime environment for gcc to support binaries native to Windows 64-bit and 32-bit operating systems.

Zygisk-Il2CppDumper is an Android reverse engineering utility that adapts Il2CppDumper-style metadata extraction to a Zygisk runtime environment. It is designed for Unity games and applications that use IL2CPP, where static extraction may be difficult because metadata can be protected, encrypted, or obfuscated. The tool runs through a Magisk/Zygisk module and targets a specific package name during execution. Its main output is a dump.cs file that helps researchers inspect IL2CPP classes, methods, and structures. The project is most relevant to authorized reverse engineering, interoperability research, debugging, and security analysis. Because it works on protected app internals, it should only be used on software the user owns, controls, or has explicit permission to assess.

DynamoRIO is a runtime code manipulation system that supports code transformations on any part of a program, while it executes. DynamoRIO exports an interface for building dynamic tools for a wide variety of uses: program analysis and understanding, profiling, instrumentation, optimization, translation, etc. Unlike many dynamic tool systems, DynamoRIO is not limited to insertion of callouts/trampolines and allows arbitrary modifications to application instructions via a powerful IA-32/AMD64/ARM/AArch64 instruction manipulation library. DynamoRIO provides efficient, transparent, and comprehensive manipulation of unmodified applications running on stock operating systems (Windows, Linux, or Android) and commodity IA-32, AMD64, ARM, and AArch64 hardware. Mac OSX support is in progress.

Deprecated - see new repository in GitHub instead: https://github.com/openeventmachine/em-odp Open Event Machine (OpenEM or EM) is an architectural abstraction and framework of an event driven multicore optimized processing concept originally developed for networking. It offers an easy programming concept for scalable and dynamically load balanced multicore data plane applications with a very low overhead run-to-completion principle. EM can run on bare metal for best performance or under an operating system with special arrangements. This release of the Open Event Machine contains the EM API as well as an example implementation for Intel multicore CPUs. !!! NOTE !!! Release version numbering scheme changed: after v1.5 follows v1.1.0, where 1.1 reflects the used OpenEM API version.

JerryScript is a lightweight JavaScript engine for resource-constrained devices such as microcontrollers. It can run on devices with less than 64 KB of RAM and less than 200 KB of flash memory.

ORP, Open Runtime Platform, is an open source research infrastructure for dynamic compilation and memory management. The current implementation supports programs compiled to bytecode and linked with the GNU Classpath libraries.

magic GUI platform is intend for embedded system, include mg-designer and mg-runtime platform. embedded application developer just design the GUI application, no coding, no toolkits. The magic GUI file can run on top of mg-runtime platform directly.

The NT POSIX C Runtime Library is an IEEE standard runtime library for the NT POSIX subsystem. It can be used as a complete replacement or a side by side alternative for what is shipped with the Interix SDK.

PicoGK Runtime is the C++ runtime framework behind PicoGK, LEAP 71’s compact geometry kernel for Computational Engineering. It provides the lower-level backbone that allows PicoGK applications to execute robust geometry operations. The repository is mainly intended for users who want to compile the runtime themselves instead of relying on available installers. It is built around established open-source foundations, including OpenVDB and GLFW. Its role is to support the higher-level PicoGK environment used for algorithmic generation of engineering geometry. Overall, it is best understood as the technical runtime layer that powers PicoGK rather than the primary starting point for most end users.

QIRA is an interactive runtime analysis environment designed as an alternative to tools such as strace and GDB. It records program execution and lets users navigate through the resulting trace rather than inspecting only the current process state. Its interface combines a visual timeline with instruction views, registers, data changes, a hex editor, and syscall information. Users can follow instruction addresses, data accesses, function activity, and execution forks. The project integrates QEMU-based tracing and supports additional tracing backends, with libraries available for several CPU architectures. Names, comments, static annotations, keyboard navigation, and Docker-based deployment support deeper reverse-engineering workflows.

core-rc contains the runtime configuration and configuration file parsing functions. This is a submodule of µwm. It uses core-array to store the parsed configurations. Planning: application config write.