VMware ThinApp is a computer program that can make other programs work even if they are not installed on your computer.
Imagine you have a toy car and a toy garage. When you want to play with the toy car, you need to put it in the garage first. But sometimes, you don't have enough space to put all your toy cars in the garage, and they're just laying around the house.
This is like how computer programs normally work. When you download a new program, you have to install it on your computer first before you can use it. But if you don't have enough space on your computer, you may not be able to install all the programs you want.
Now, imagine if you could make a special "garage" that your toy car could run in even without actually being in the garage. This is how VMware ThinApp works. It makes a special environment for your program to run in, without actually installing the program on your computer.
This means that you can have lots of different programs, but they don't take up much space on your computer. It's like having a magic box that can contain any toy car you want to play with, no matter how many you have or how big they are.
VMware ThinApp is useful for people who want to use a lot of different programs on their computer but don't have enough space to install them all. It helps keep their computer organized and running smoothly.