I saw both of those this week. The rope cinch seems pretty cool.
The beau clip is actually very similar to a product we use in production on commercial millwork projects daily.
Starhanger Blue Zero
They actually have a whole line of panel hanging products, aimed primarily at the commercial millwork industry, but also very useful for a variety of projects.
We use the Blue Zero and the Star Lock most often, as we can machine for them on the CNC very efficiently and just put in the hardware on the panel, and the mating screw on the sub panel and they line up without any measuring.
They are also very easy to install manually with just a drill as well. I have used them for many personal projects as well.
The snap in type fastener is not anything new, and has been used in different forms for marine type fasteners for years.
Here is a company with a very comprehensive system:
FastCap is a great company that does a great job helping everyday woodworkers bring their inventions to market. A lot of their products are aimed at cabinet makers and full time woodworkers.