Adobe Fireworks CS3 offers a range of extra quality features that make it a valuable tool for web designers and developers:
Adobe Fireworks CS3 is currently considered an "end-of-life" product
I really need to install CS3 [CS3 IS DEAD] - Adobe Community
Released as part of Adobe's Creative Suite 3 (CS3), Fireworks was designed to bridge the gap between design and development, offering a vector and bitmap editor that could efficiently handle web graphics, interactive elements, and even some aspects of web page design. Its ability to work seamlessly with other Adobe applications like Photoshop and Illustrator made it a valuable asset in the workflow of many professionals.