Adobe Photoshop CS6 (the last perpetual license), Affinity Photo 2 (one-time payment), or GIMP (free).
Adobe Photoshop 7.5 Software: Navigating the Myths and the Legacy Adobe Photoshop 7.5 Software
If Adobe never manufactured a product box labeled "Photoshop 7.5," where does the keyword come from? The technical community points to three historical and practical explanations: Adobe Photoshop CS6 (the last perpetual license), Affinity
The Evolution Of Photoshop: 25 Years In The Making - FastPrint Affinity Photo 2 (one-time payment)
When people search for "Adobe Photoshop 7.5 software," they are often looking for the last version of the "classic" series, or a modified version that patched in features from later releases. Adobe never released a 7.5 version.