Minecraft Forge 1.16.4,1.16.3, 1.15.2,… is a functional catalog for the Minecraft applications. It is the basis of most of Minecraft’s existing mods that gives developers the freedom to be inventive and modify the Minecraft using it as a framework. To put it simply, the overall potential of Minecraft becomes boundless with Forge’s assistance.
https://wminecraft.net/minecraft-forge/

Understandably, Optifine HD Mod is a performance-related tool that can provide a huge FPS boost and significantly reduce latency. Basically OptiFine HD Mod is a very useful tool that helps you adjust your Minecraft settings effectively. It makes games run in a smoother way and uses fewer resources. Besides, it allows you to run HD textures and resource packs without installing other mods.
https://wminecraft.net/optifine-hd-mod/