Adobe has never released an official portable version of any Creative Suite application. There are good architectural reasons for this:
If you are running an older machine (Windows 7 or Windows 10 with lower specs), or if you are a digital archaeologist who wants to experience the software that changed the industry, CS5 is a masterpiece. It is the last great stand-alone giant. It represents a time when software was a tool you bought, not a service you rented. adobe white rabbit photoshop cs5 portable exclusive