When it comes to saws, people are either in the western-saw camp, or the Japanese saw camp. But those are not the only two “families” of saw. The saws that are so prevalent in the west, originated in the UK, and would be better classified as British-style saws. The eastern saws are dominated by the saws of Japan. Western saws cut on the push-stroke, Japanese saws on the pull-stroke. But a third style evolved in Europe – something we call the frame saw. Tour any folk museum in Europe and you will see frame saws. They are the descendants of the pit-saws historically used to break down logs.
The British use a smaller related saw commonly known as a bow saw, which is used to cut curves. As with many woodworking tools, there were once a multitude of manufacturers in Europe. Now, there are still two German manufacturers: Ulmia, and ECE. These saws have many benefits, not least of which, the blades can be interchanged to allow for different blade widths, and easily replaced. Tension can also be adjusted. They can be used for ripping, crosscutting , cutting curves, and even resawing.
Quite a few people are making the Roubo frame saw, which is a massive frame saw often used for re-sawing. But whilst there are a number of toolmakers making Western style handsaws, there seem to be none making continental style frame saws.