Open-source alternatives to Libffi

JNA is a foreign function interface and native memory mapper that allows Java applications to call functions in shared native libraries without writing custom JNI wrapper code. It serves as a JNI alternative framework for invoking C functions and mapping native data structures using high-level interfaces. The library distinguishes itself through its ability to translate Java objects and primitives into C-style structs, unions, and pointers for cross-platform memory exchange. On Windows, it provides a dedicated toolkit for interacting with Component Object Model objects using both early and la

This project is a memory-safe library implemented in Rust that provides a high-performance engine for managing shared, distributed data states. It functions as a conflict-free replicated data type implementation, enabling real-time collaborative editing and state synchronization across distributed systems without the need for a central server or manual conflict resolution. The library distinguishes itself through a cross-language binding framework that allows native applications in environments like Python, Swift, and WebAssembly to interact with the same shared data protocol. It utilizes a c

JavaCPP is a JNI C++ bridge and foreign function interface that provides a binding generator, a native library loader, and a native memory manager. It automates the creation of Java wrappers around native C++ headers and shared libraries to enable interoperability between the two languages. The project features a C++ binding generator that parses header files to automatically produce the necessary glue code and interfaces for calling native functions. It includes a native library loader that locates and extracts platform-specific binaries from the classpath into a local cache for runtime exec

Neon is a framework for writing high-performance native Node.js modules using the Rust programming language. It serves as a foreign function interface bridge and a toolchain for bootstrapping, compiling, and managing Rust-based extensions. The project provides a cross-language memory manager that handles buffers and object borrowing to ensure safe memory access between Rust and JavaScript. It enables the mapping of data types and function calls across the language boundary, allowing Rust functions to be exported to the script environment and JavaScript functions to be called from Rust. The f

CPython is the primary, community-maintained reference implementation of the Python programming language. It functions as a high-level, interpreted execution environment that compiles source code into platform-independent bytecode for processing by a stack-based virtual machine. The runtime manages memory through a combination of reference counting and generational cyclic garbage collection, while dynamic type dispatching determines object behavior at runtime based on metadata stored within object headers. The project is distinguished by its C-based architecture, which provides a stable forei

This project is a professional live video production suite designed for capturing, encoding, and broadcasting high-quality media. At its core, it features a real-time media processing engine that utilizes hardware acceleration to composite multiple audio and video sources with minimal latency. The application provides a centralized studio interface for managing complex scene transitions, layering visual sources through a hierarchical scene-graph engine, and streaming content to multiple platforms simultaneously. The software is built on a cross-platform abstraction layer that ensures consiste

Torch7 is a scientific computing environment and tensor computation library used for deep learning research and numerical analysis. It functions as a Lua-based framework for training neural networks and learning agents, providing a toolkit for implementing architectures and training through reinforcement learning algorithms. The project is distinguished by its tight integration with C, utilizing a binding layer to map high-level scripting to low-level C structures for direct memory access. It supports hardware-accelerated computation by offloading linear algebra and convolution operations to

This project provides a header-only C++ wrapper for the Node-API, serving as a framework for building high-performance native addons for Node.js. It acts as a bridge between C++ and JavaScript, offering an object-oriented interface that simplifies the creation of compiled extensions while managing the complexities of the language boundary. The library distinguishes itself by providing type-safe abstractions for data marshalling and memory management, ensuring that native and script-side objects are tracked and reclaimed correctly. It includes mechanisms for coordinating asynchronous tasks bet

This project is a collection of official plugin packages and a native integration library designed to provide a consistent interface for accessing hardware and software functionality across different mobile and desktop platforms. It serves as a native platform bridge, enabling cross-platform applications to invoke native code and manage operating system dependencies. The project utilizes a federated plugin architecture, splitting plugins into common interfaces and separate platform implementations to allow for independent development and extension. It further supports native integration throu

Odin is a compiled, statically typed systems programming language designed for high-performance software development. It focuses on pragmatic low-level memory control, providing a toolset for manual memory management and precise control over hardware utilization. The language is distinguished by its flexible memory model, which includes custom allocators and precise data layout capabilities to optimize resource usage. It features a comprehensive foreign function interface for importing assembly files and linking with external libraries using configurable calling conventions. The type system

cuda-python provides low-level Python bindings for the CUDA Driver and Runtime APIs. It serves as a programmatic wrapper for controlling device memory, managing hardware toolchains, and orchestrating execution graphs on NVIDIA GPUs, allowing for the compilation and launching of parallel kernels directly from Python. The project enables the development of SIMT kernels and the execution of mathematical algorithms on device memory. It integrates pre-compiled bytecode as custom operators and interfaces with accelerated device libraries to access low-level hardware functions without leaving the la

This project provides Rust bindings for the Dear ImGui library, enabling the creation of high-performance graphical user interfaces using an immediate-mode paradigm. By defining interface elements directly within the application render loop, it eliminates the need for persistent object hierarchies, allowing for rapid prototyping and dynamic visual updates. The library distinguishes itself by wrapping complex native function signatures in type-safe builders, which improves developer ergonomics while maintaining the performance characteristics of the underlying C++ implementation. It utilizes a

Janet is a Lisp-based dynamic programming language featuring a register-based bytecode virtual machine and an embeddable scripting engine. It functions as a fiber-based concurrency runtime and includes a parsing engine based on Parsing Expression Grammars. The project is distinguished by its ability to be integrated into C or C++ applications via a minimal header interface. It utilizes a Lisp-style macro system for compile-time code transformation and employs prototype-based table inheritance for object-oriented behavior. The runtime covers a broad set of capabilities, including asynchronous

JavaCV provides a Java-based interface for native computer vision and video processing libraries. It functions as a wrapper for native vision libraries, allowing Java applications to perform image analysis, object detection, and video stream processing. The project integrates comprehensive computer vision capabilities, including facial recognition, image segmentation, and optical flow analysis for motion tracking. It also provides tools for hardware geometry calibration and projector-camera alignment to ensure accurate spatial representation. The system covers high-performance media renderin

This project is a comprehensive guide for writing Neovim configurations and plugins using the Lua programming language. It serves as a manual for using the native Neovim Lua API to manage buffers, windows, and editor options. The guide focuses on the interoperability between Lua and Vimscript, providing instructions on how to execute Vimscript from Lua and call Lua functions from within Vimscript. It also provides a framework for plugin development, covering the organization of code into external modules and the creation of custom commands and key mappings. The documentation covers broader c

flutter-webrtc is a real-time communication SDK and plugin for the Flutter framework. It provides a set of tools for establishing peer-to-peer media connections and low-latency data exchange across mobile, desktop, and web environments. The project enables the creation of applications with live audio and video calling, real-time media streaming, and peer-to-peer data channels for sending encrypted arbitrary data packets without a central server. It supports secure media communication through end-to-end encryption for audio, video, and data streams. The SDK covers broad capabilities including

flutter-go is a cross-platform UI framework and kit designed for building mobile and desktop applications using a Go backend and a Flutter frontend. It provides a communication bridge that enables Go functions to be executed from Dart code via a C-ABI foreign function interface. The project includes a Flutter UI component library and a frontend design gallery. These resources provide pre-designed interface patterns, reusable widgets, and interaction demos to assist with rapid application prototyping and consistent interface design across different operating systems. The framework covers nati

PyOxidizer is a Python application packager and interpreter embedder designed to compile Python code and dependencies into a single standalone executable binary. It functions as a distribution tool that allows applications to run on target machines without a pre-installed interpreter. The project serves as a bridge between Rust and Python, providing a framework to integrate the two languages for creating linkable libraries or incrementally replacing logic. It facilitates the embedding of a Python runtime into larger applications to execute scripts or provide Python-based logic. The toolset c

This project is a comprehensive technical guide to advanced Go programming. It serves as a programming guide, technical reference, and textbook covering low-level optimization and distributed systems architecture. The resource provides detailed instructions on writing assembly instructions to optimize performance-critical code and managing C-Go interoperability to bridge C libraries with Go. It also functions as a manual for implementing remote procedure call mechanisms and creating custom plugins for the Protocol Buffers compiler. The material covers high-level capabilities including the de

react-native-godot is a communication layer and embedding system that integrates the Godot game engine into cross-platform mobile applications. It allows Godot game scenes and logic to be rendered as interactive visual components within a mobile user interface. The project provides a threaded logic bridge that executes engine functions on dedicated background threads using worklets. This ensures that game engine operations do not block the main application user interface. The system covers engine lifecycle management, including the ability to start, stop, and pause instances to load differen

wasm-bindgen is a bindings generator and interop layer designed to map data types and functions across the boundary between WebAssembly and JavaScript. It functions as a foreign function interface that synthesizes the necessary boilerplate to enable bidirectional communication between Rust and the browser runtime. The project generates glue code and wrappers that automate the conversion of complex types, allowing Rust functions to be exported as JavaScript modules and browser APIs to be imported into Rust. It uses procedural macros to define these interfaces and synthesizes bindings based on

gdext provides a set of language bindings for writing high-performance native game logic in Rust for the Godot 4 engine. It serves as a framework for creating native engine extensions and custom classes via the GDExtension library, allowing developers to extend core engine functionality without recompiling the engine source code. The project includes a dedicated Rust WebAssembly toolchain to compile native logic into modules for execution in web browsers. This system supports WebAssembly-compatible compilation with specific configurations for web threading and module debugging. The toolkit c

Gleam is a statically typed, functional programming language designed for building scalable and maintainable applications. It operates as a cross-platform development ecosystem that compiles source code to run on the Erlang virtual machine or within JavaScript environments. The language integrates a package manager and build system that automates dependency resolution, project compilation, and the generation of software bills of materials. The language distinguishes itself through a focus on type-driven domain modeling and a robust foreign function interface framework. By encoding business ru

Nim is a statically typed, compiled systems programming language designed for high performance and cross-platform development. It translates high-level source code into C, C++, or JavaScript, allowing developers to produce efficient native binaries or web-compatible scripts from a single codebase. The language emphasizes a clean, indentation-based syntax that simplifies code hierarchy while maintaining the power of a full-featured systems language. What distinguishes Nim is its robust metaprogramming framework, which allows developers to inspect, modify, and generate code structures during th

This project is a multi-platform UI framework designed for building applications that target mobile, web, and desktop environments from a single codebase. It utilizes a declarative paradigm where the user interface is defined as a function of application state, supported by a layered architecture that includes a high-performance rendering engine and a multi-platform compilation model. The framework provides a comprehensive suite of developer tools, including hot reloading for real-time code injection and diagnostic utilities for monitoring application state and performance. It features a modu

Crystal is a statically typed, compiled programming language designed for high performance and memory safety. It leverages an LLVM-based compiler to translate source code into optimized machine-executable binaries, while its type-inference-based static analysis enforces strict safety rules during the build process. The language distinguishes itself through a fiber-based concurrent runtime that manages lightweight execution units for asynchronous input and output without blocking the main process. It also features a powerful compile-time macro system that allows for the inspection and transfor

Kotlin is a statically typed, general-purpose programming language designed for type safety and concise syntax. It functions as a cross-platform development toolkit that enables the sharing of business logic across mobile, web, and server-side environments by compiling a unified intermediate representation into platform-specific machine code, bytecode, or source code. The project distinguishes itself through a multi-target build orchestration model that manages complex compilation units and hierarchical source sets. Developers can define common interface logic that is satisfied by platform-sp