MicroTik is European (Latvian) and makes some affordable routers. Their own RouterOS is closed source, but many models are supported by OpenWrt (no experience). If you are willing to spend more, OPNsense (Netherlands) also sells hardware. In the old days one could also recommend PFsense hardware, but they are becoming more and more closed (though you can usually run OPNsense on the same hardware).

QNAP is Taiwanese. Their QHora routers use closed software, but I think most models are supported by OpenWrt.