ECSY is described as 'Experimental Entity Component System framework for the web. Made by Mozilla, the framework is implemented in JavaScript and aims to be lightweight, easy to use and performant' and is an app. There are four alternatives to ECSY for Self-Hosted, Windows and Linux. The best ECSY alternative is Entitas, which is both free and Open Source. Other great apps like ECSY are EntityX, Flecs and EnTT.
Entitas is a super fast Entity Component System Framework (ECS) specifically made for C# and Unity. Internal caching and blazing fast component access makes it second to none. Several design decisions have been made to work optimal in a garbage collected environment and to go...
Flecs is a Fast and Lightweight ECS (Entity Component System). Flecs packs as much punch as possible into a small library with a tiny C99 API and zero dependencies.
Gaming meets modern C++ - a fast and reliable entity-component system (ECS) and much more. EnTT is a header-only, tiny and easy to use library for game programming and much more written in modern C++, mainly known for its innovative entity-component-system (ECS) model.
