Frites Stands in Belgium and Paris

There's a good frites stand in the main square in Bruges -- very good in 2007, and I think I got frites there in 1986 also!
I actually don't remember seeing any actual frites stands in Paris, but you can usually get excellent frites at most of the sidewalk cafes, etc.

Frites stands are more plentiful in Belgium and Holland than in France.

I have never seen a frites stand in Paris.

Frites are found in Paris, but as a side rather than as a takeaway. You can get moules frites or steak frites but like the others I didn't see a takeaway frites stand in Paris.

A common nominee for the best frites in Brussels is Antoine's in place Jourdan near the Parc Leopold. I can also recommend the one in Place Sainte-Catherine opposite Sainte-Catherine church.

Some of the best chips in Paris are at La Bourse ou la Vie at 12 rue Vivienne near the old national library (the one near Palais Royal, not the big modern new one in the east). But that's a sit-down restaurant, not a stand.

Friteurs are everywhere in Belgium. Just keep your eyes open and you'll see them. In addition to the fries with various condiments, most of them also sell various types of fried meats.