Google made the NIK Collection of photo editing programs available for free and who doesn’t like free?
They can be installed on your computer to work within LightRoom (LR) as “Plug-Ins”. Plug-Ins allow editing from within LR and when you have completed your edits using the Plug-In, your image file will be added to the LR catalog. I will demonstrate how to do this in the LightRoom class on May 21 & 28, 2016.
This version of the collection may be a challenge to install with Lightroom on Mac computers. Fortunately, the folks at Google have a work around.