While Albrecht von Wallenstein was engaged in the Second battle of the White Mountain, leaving Prague vulnerable to Heinrich Holk's forces, Red Sybolt created a makeshift Katyusha by setting multiple rocket launchers on top of a pickup truck, and firing them with a button installed in the driver's compartment. Sybolt was the first to use the term, possibly because the original Soviet Katyushas were usually mounted on trucks. It was effective because it was used against tightly packed troops in a confined space, and fired at close range. Sybolt was careful to point out that the original Katyushas had only been effective at long range because the Soviets had a lot of them.
There is no indication that the term has been applied to any other rocket launchers. While the Ottoman Empire has used rocket bombardments, they do not appear to have developed Katyusha-style mobile rocket launchers. If they have, they do not appear to have shown any.