Not a direct photoshop replacement, but for specific photo editing of RAW photos, have you tried darktable? (<a href="http:&#x2F;&#x2F;www.darktable.org&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.darktable.org&#x2F;</a>)<p>It&#x27;s <i>not</i> as good as Lightroom, but I&#x27;d say it&#x27;s 80% of the way there, and you can replicate some of the missing functionality with other applications.