Perfect Effects 9 can work as a stand-alone application, or as a plug-in to Lightroom, Aperture or Photoshop (CC or Elements). For a lot of folks, the combination of Lightroom and Perfect Effects could be all you ever need. Depending on how you want to work, Perfect Effects could be all you need.
Again, this is a fully licensed version of Perfect Effects 9 - no trial or limitations. You can read about what Perfect Effects 9 can do for you here. Better yet, just go to the offer link and download the software and play.
OnOne Software have a selection of free presets for Lightroom, Aperture and Adobe Camera RAW as well, which you can access here:
Note: I have no affiliation with OnOne Software.