Adobe shut down the activation servers for all CS3 applications in July 2017.
The legacy of Fireworks CS3 is most visible today in the tools that have succeeded it. Modern UI design software like Figma and Sketch owe a significant debt to Fireworks. They have adopted and refined the concepts of pages, symbols, and vector-first workflows that Fireworks pioneered. Yet, for the die-hard loyalist, these modern cloud-based alternatives lack the specific, tactile "feel" and the integrated bitmap-editing capabilities of Fireworks. The demand for a download is a refusal to let go of a tool that perfectly understood the hybrid nature of web design. adobe fireworks cs3 download
Sites like ProDesignTools historically kept links to official Adobe servers, but most of these links now return errors or redirect as Adobe has removed the files. Adobe shut down the activation servers for all