I know that some folks may this this is off topic, but splitting firewood is using a hand tool to "work" wood, right?
Any way, I saw this article today and followed up on it. There are a lot of puff pieces out there but this is an in depth look at the tool by the folks who actually invented it. It is very interesting.
I have bought a lot of different splitting mauls and axes over the years and nothing compares to this thing. What is most inspirational about this is that it is mostly the work of one guy who worked on it for many years by himself. Until he eventually got the design right.
If I was dong much wood splitting any more, I would buy one of these in a heartbeat. It is made in Finland. The Finish word for the axe translate roughly into "leveraxe". There are a bunch of articles and pictures of this leveraxe on the web.