Which tools do you use to record/create the demo of your product?

Check out Vmaker for creating a demo of your product. You can easily share it with a link.

Loom or OBS. At least that's what I used to create the demos of the games I make, then overlay with editing from another software. Here's an example of one of my videos:

Camtasia for simple screen recording of long videos. Pretty simple and straightforward editing capabilities. Loom for personalized instructions or short recordings. OBS for screen recording when featuring the speaker with a green screen effect.