Pony is an actor based language. You have to have at least one actor. Effectively, the answer is no. You could write "single-threaded" Pony code but it's not so

Pony is an actor based language. You have to have at least one actor. Effectively, the answer is no. You could write "single-threaded" Pony code but it's not something you would do. Pony is designed to make something hard- writing efficient, safe, concurrent code- easy. Anything you make something that is hard easier, you are invariably going to make some other things less easy, perhaps even difficult.