There are dozens of companies around the world that manufacture tractor PTO winches.
Here are some (*in the North American market):
*Balfor, Made in Italy
Beha, Made in Germany
Bernardi, Made in Italy
BGU, Made in Germany
Cerri, Made in Italy
Clauzier, Made in France
Dal Pozzo, Made in Italy
Dorn-Tec, Made in Germany
*Farmi, Made in Finland
Forstmaster, Made in Austria
*Fransgard, Made in Denmark
Gantner, Made in Austria
Holzknecht, Made in Austria
*Igland, Made in Norway
Interforst, Made in Austria
KGD, Made in Austria
Kienesberger, Made in Austria
Krasser, Made in Austria
*Krpan, Made in Slovenia
Maxwald, Made in Austria
Murztaler, Made in Austria
*Norse, Made in Norway
Oehler, Made in Germany
Pfanzelt, Made in Germany
Rabaud, Made in France
Ritter, Made in Germany
Schlang & Reichart, Made in Germany
*Tajfun, Made in Slovenia
Tiger, Made in Austria
*Uniforest, Made in Slovenia
*Wallenstein, Made in Canada
*Woodland Mills, Made in China