Iconic canvas sneaker brand since 1916. Many styles go up to size 11 US (8.5 UK, 42.5 EU) including some cute prints and their Kate Spade glam glitter sneakers which are popular for weddings. They also do a few rain boots in size 11 too. Basic sneaker colours are available up to size 13 US. Selected styles come in narrow, wide or extra wide fit. Keds ship to most regions worldwide.
Huge range of women's shoes in European sizes 42-46 (including some half sizes), with some unisex styles beyond that. Mainly standard or wide fit footwear, with a few narrow width options. All shoe types covered including bridal, slippers and rain boots (wellies). Schuhplus have several stores in Germany and ship worldwide. Website in German but there's a google translate widget at the top that works well.
Gina collates wide fit & extra wide shoes from lots of UK stores, including special large size lists for sizes 9-11 uk. She also lists bunion friendly shoes & wide socks & tights. Subscribe to her newsletter to get new shoes every 2 weeks.