[sharkdp]

The logo shows a small part of this molecule: https://en.wikipedia.org/wiki/Hexanitrodiphenylamine

.. which is apparently also called "Hexyl". Granted, I was just looking for a short word that starts with "Hex" and I was never good at organic chemistry :-)

[teacpde]

Many of your projects have cool logos, how do you make them?

[sharkdp]

Thank you. Not all of them are by me, but I typically just use Inkscape.