Searching for a "New" Flash CS6 Portable today is an interesting paradox. Since development on the portable versions stopped years ago (for obvious legal and stability reasons), finding a "new" one is like finding a brand-new VHS tape. It’s a digital artifact.
If you manage to find a working copy of Flash CS6 Portable, you will likely find that the still work perfectly. The drawing tools, the timeline, and the classic tweening features are timeless.
