Question: ![a video capture](https://i.stack.imgur.com/HuXxm.png)

Just as the capture shows, when you type something using the keyboard, a big label appears at the bottom of the screen showing the keys you typed.

I use Windows & Linux, so I just want to know if there is a similar software to do that?

Answer: 
For Linux check Screenkey: <https://launchpad.net/screenkey>
On Windows there is [Carnac the Magnificent](http://carnackeys.com/).

> 
> A keyboard logging and presentation utility for presentations, screencasts, and to help you become a better keyboard user.
> 
> 
> 

Install via Chocolatey:

```
choco install carnac

```

Or Scoop:

```
scoop install carnac

```

Source on GitHub:

<https://github.com/Code52/carnac>