Funny you should mention it, I actually discovered Jackett through Radarr/Sonarr. I saw a lot of people a few years ago on r/Piracy raving about how much they love their Radarr/Sonarr setup, so I decided to follow a video tutorial on how to set up Radarr/Sonarr. One of the steps was to install and configure Jackett. Long story short, I realized a Radarr/Sonarr setup just wasn't worth it for me (didn't have the time/money to set up a dedicated computer for it), so I uninstalled all the .arr programs and gave up on that, but I forgot to uninstall Jackett. Later, I rediscovered it on my system, and while poking around on the interface, I found the manual search function and used it. Suffice to say, it's all been uphill from there lol