As of December 2019, Adobe stopped providing CS3 downloads entirely. Sites claiming to offer a "free full version" of Dreamweaver CS3 are often unreliable and may bundle the software with security risks.
If you are still interested in what made CS3 a landmark release, here are its standout features: Dreamweaver CS3 Activation [CS3 IS DEAD] | Community
It is important to know that . Adobe shut down the activation servers for CS3 in July 2017. This means that even if you find an old installer, it is impossible to activate or use the software beyond a 30-day trial.
Looking for a free full version download of ? While this version was a powerhouse for web design in its day, the landscape for downloading and using it has changed significantly. The Reality of Adobe Dreamweaver CS3 Downloads