Dreamweaver CS3 was the first version released after Adobe’s acquisition of Macromedia. It introduced revolutionary features for its time, including:

If you are looking for Dreamweaver CS3 because you want a "no-subscription" way to build websites, there are modern, free, and more powerful alternatives available:

If you are trying to recover a serial number you already own, you can try these official methods:

Allowing designers to create interactive elements without deep coding knowledge.