[Leica] Photo-editing software recommendations?

[Frank Filippone]

What you lose by sticking with the perpetual license version of LR is the additional features that Adobe has been incrementally adding in the various cloud versions. As long  as you did your edits with the same or previous perpetual versions, you will be able to view,edit, print etc with your edited files using the perpetual version. As far as new camera files, you can use ACR (Adobe Camera Raw) to convert to DNR files and this can be used in any editing program.  ACR is free. Updates are free 
https://helpx.adobe.com/camera-raw/kb/camera-raw-plug-in-installer.html