Hola Zan. ¡Arriba España! Bienvenido a Bladeforums.
Okay, these are the European brands I own or have owned:
Aitor: Spain
Muela: Spain
Andújar: Spain
Exposito: Spain
Nieto: Spain
Fox: Italy
Maserin: Italy
Lion: Italy
Opinel: France
Wichard: France
Böker: Germany
Klotzli: Switzerland
Victorinox: Switzerland
Wenger: Switzerland
Helle: Norway
Brusletto: Norway
Karesuando: Sweden
KJ Eriksson: Sweden
Fallkniven: Sweden
Frosts: Sweden
Marttiini: Finland
Heimo Roselli: Finland
Iisakki Järvenpää: Finland
All of these manufactures produce decent knives depending on the type of knife you're looking for. Victorinox & Wenger's Swiss Army knives need no introduction. Being that you are from Madrid, I trust you are already familiar with the knives of Spain. The Scandinavian manufacturers mentioned above are a great source for nordic knives and puukkos. Fallkniven has some great fixed blades, although they do have a folder made in Japan for them that is very similar to the William Henry Evolution series. The Italian manufacturers like Fox, Maserin hve a pretty decent line of linerlock folders and lockbacks. They even manufacture knives for Kellam, Delta-Z and Ka-Bar. As far as French knives, I only have experience with the classic Opinel and Wichard. Wichard is a French company that specializes in sailing boat hardware, but they have a neat line of folding deck knives, some with glow-in-the-dark handles. Klotzli of Switzerland has some very nice folders as well, but they are pricey. Böker of Germany has some interesting stuff, but be wary since their QC is sometimes iffy.
**edited for spelling**