ember-copy is a lightweight Ember addon that provides a `copy()` utility function and a `Copyable` mixin, serving as the replacement for the now‑deprecated versions bundled with Ember core. It is intended for Ember developers (v3.16+) who need a stable, backward‑compatible way to duplicate objects and implement copy semantics in their applications. Installation is as simple as `ember install ember-copy`, after which the utilities are imported from `'ember-copy'` instead of `@ember/object/internals`.