I have installed the plugin on two LR systems, with the same registration code; the second one is/was for demonstration purposes only. Depending on your intended use: rumour has it that LR6 will have options for HDR and panoramas so if you want to use LR/Enfuse for HDR I'd wait a couple of days. Ok so here we are going to take a look at the best Lightroom plugins for 2019. For those who aren’t that tech savvy, a little reminder – plugins are programs coded to fit in with another program, in our case Lightroom, and are often referred to as add-ons or extensions as well.