This is a mod called TooManyItems. This mod allows the player to spawn objects and materials so that they can get enough blocks to build a project or to cheat and get diamonds quickly. It can also allow the player to switch between game modes so that they can fly around and break blocks instantly.
This is another mod that you can get in Minecraft called the "Combined tools mod". This mod allows you to combine the tools into one giant tool capable of doing everything at once.This mod is called the Paxel mod and it is really just all the names of the tools put together. The Paxel mod can be very handy because you will never need to switch tools except to place down a torch.
