The Waila mod allows you to see what block or object you are looking at, showing information at the top of the screen in the form of the name of the object and health in the form of units and percentages (if it is a creature).
In version 2.0 the following innovations were added:
Tool indicator - a suitable tool for efficient mining will be displayed next to the block name.
Updated health indicator - makes the health bar of creatures similar to yours, making it more convenient to perceive.
Viewing dropped items - get information about items lying on the ground as drops.
