For true vintage versions of Cakewalk—such as Cakewalk Pro Audio 8, Pro Audio 9, or early 1990s DOS versions—the Internet Archive ( archive.org ) is the top resource.
SONAR 8.5 or earlier will likely need a virtual machine or a dedicated old PC (Windows XP/7) to function properly. Conclusion: The Best Path Forward
Download for Windows (v1.1.8.1) | Download for Mac (v1.2.3).
How to Install and Optimize Legacy Cakewalk on Windows 10 and 11