I am wondering if "Ghosting" effects like the one in this video are available in any Open Source software, like Blender.
Premiere Pro seem to call it "ghosting" while Final Cut Pro seems to call it "Ghost Trails".
To my knowledge, there is no Open Source tool with a built-in feature for producing that ghosting effect. However, I believe there exist the necessary tools for you to create the effect yourself.
Breaking down what's happening, it looks like the effect consists of:
There are Open Source tools to do just that.