I'm living almost exclusively in Linux these days, working towards making the transition from Lightroom to Darktable.
One of the applications from my Windows days that I used (and really like) is Qimage, which does an amazing job of automagically sharpening photos for a given print size. I would use Qimage and output to a file as the final step before uploading to sites like Mpix for ordering prints.
Is there a similar application in the Linux world? I've done a bit of searching but have yet to unearth anything. I can always continue to run Qimage in a VM, but would love to have a native Linux app that can perform a similar function.