Adobe Lightroom is an incredible powerful software solution for many photographers to manage their large image libraries. Though complex, Lightroom is a terrific tool for browsing photos, rating them and performing other activities such as printing or uploading to galleries through their print services functions. What Lightroom lacks is a complete image editing solution such as the one Luminar from Skylum offers.
The good news is that Luminar can run as an editing extension ("external editor") to Lightroom. This means that any image that can be browsed and rated in Lightroom can be edited in Luminar by simply going to the Photo > Edit In menu. Enjoy!