These are the heavy hitters. They are technically free to download and use, but they apply watermarks or pop-up windows until you pay.
I have analyzed the landscape of free Photoshop plugins focused on creating shadows. The market has shifted significantly in recent years; standalone "free" plugins are rare because most have moved to a "Freemium" model (free with a watermark or limited features) or are part of paid bundles. photoshop shadow plugin free
: Often found as a free download on sites like GraphicBurger. 3. Shadowify (V1.0.1) These are the heavy hitters