That's a Rainmeter skin. "Skins" are alot like "gadgets" for the old Sidebar.
You can use this skin by downloading and installing Rainmeter, and downloading and installing the skin afterwards.
Rainmeter: https://www.rainmeter.net/
Edit 1: Be careful with the original links that I posted here for the skin. They will ask you download other software. I should have checked more carefully first. I recommend finding another download for the BlueVision skin.
Edit 2: A valid link for the BlueVision skin:
https://fc01.deviantart.net/fs71/f/2010/120/f/5/BlueVision_V0_2_Alpha_by_g3xter.rar
Extract it and place the "BlueVision V0.2" folder into your Rainmeter Skins folder. Right click on Rainmeter and choose "Refresh all". Right click again and the skin will appear in the Skins menu. You will have to open each one of them in the Skin menus (CPU, HDD, plus many others) and arrange them however you like on your desktop.