Adobe no longer sells CS3. If you own an old license key (from a CD), you can legally download the official installer from Adobe's archived server (prodesigntools.com hosts legit, unmodified trials). Then use PortableApps.com's Launcher to make your own portable repack without malware.
This word is marketing psychology. It promises that despite the compression and portability, no features are missing. No trial limitations. No "nags." full adobe photoshop cs3 extended portable edition repack
This is the controversial part. A repack is a version of the software that has been modified by a third party (not Adobe). Typically, repackers use advanced compression tools (like Inno Setup or WinRAR) to shrink the file size—sometimes from 500MB down to 80MB. More importantly, repacks almost always include pre-applied patches, cracks, or keygens to bypass Adobe's activation servers. Adobe no longer sells CS3
