Arch
Arch is a high-performance C Entity Component System (ECS) designed for game development and data-oriented programming. It uses an archetype and chunks architecture to deliver excellent cache efficiency, fast iteration, and low allocation overhead, performing competitively with C++ and Rust ECS libraries. Key features include 16KB chunks for large worlds, compact entity sizes, optional Pure-ECS mode for maximum performance, bulk entity operations, high-performance queries, and built-in multithreaded query support. Additional capabilities include enumerators, command buffers, and events. Arch emphasizes simplicity with a clean, minimal, and self-explanatory API. It is actively maintained, not bloated with unnecessary features, and includes extensions for expanded functionality. The library supports .NET Standard 2.1, .NET Core 6, and .NET 8, making it compatible with engines like Unity and Godot. Typical use cases include building game entities, simulating systems with position and velocity components, efficie