If you cannot find or trust a portable repack, consider these legitimate portable photo editors:
For RAW workflow specifically, is the closest open-source alternative to ACDSee Pro. Portable ACDSee Pro 8.1.99.0
To understand the appeal of ACDSee Pro 8.1.99.0, one must look back at the state of the photography industry during its release. In the mid-2010s, photographers were increasingly frustrated with bloated software that required massive system resources just to browse a folder of JPEGs. ACDSee was the answer. It was built on a philosophy of speed—bypassing the slow import processes of its competitors and allowing users to view, manage, and edit files directly from the file system. If you cannot find or trust a portable