While "portable" versions of Adobe Dreamweaver CS3 are often found on personal Google Drive

If you need a visual editor:

1. BlueGriffon Portable

physical license key

If you own a (found on an old CD case), you can download the official CS3 installer from Adobe’s legacy archive. You must run the installer, not a portable version. It will work on Windows 10/11 with compatibility mode enabled.

  • Step 3: Run Adobe Dreamweaver CS3 Portable