This mod is a Forge port of SpruceUI.
ObsidianUI is a Minecraft Mod API that adds some GUI tools. It is a library for creating and managing GUIs that provides some common components such as buttons, textboxes, sliders, and more.
Tweakeroo unofficial forge port. A client-side Minecraft mod that adds various "tweaks" (= usually small-ish individual features)
MaLiLib unofficial forge port. Library mod for the Forge port of masa's mods.
Customize your game cursor
MiniHUD unofficial forge port. A tiny client-side mod for Minecraft. that adds the coordinates, looking angle and current speed to the screen.