Bevy is an open-source ECS based game engine written in Rust programming language. https://bevyengine.org/ https://github.com/bevyengine/bevy
ECS (Entity-Component-System) is a software pattern which is generally used in computer games.
Bevy is a novel project which is not as mature as other game engines like Unity, Godot, Unreal etc. Therefore, currently it lacks a built in GUI based profiler to collect performance metrics when games are run on it.