DxO and PracticalPhotography present you with a free to obtain OpticsPro 9 Elite License if you drop your email before June 30th. Ok, so it isn't the latest version of this powerful raw editor, but this version does come equipped with the PRIME noise reduction algorithm, so you can demo a full version free of charge before deciding to spend $199 for the latest incarnation.
Although lacking in organizing tools, DxO OpticsPro is an otherwise strong contender to Adobe Lightroom. Personally, I like using them in tandem to get the best results from my nightscape images. That PRIME (Probabilistic Raw IMage Enhancement) algorithm works very well in separating noise from stars, leaving you with an essentially noiseless night sky. It does take some getting used to, and while powerful, this noise reduction method takes its sweet time to render.
PRIME, as well as the ClearView modules are only available in the Elite versions of the editor. The Essential version comes in at $70 less, but isn't really worth it in my eyes if you already have Lightroom.
Speaking of which, OpticsPro integrates with Lightroom for a seamless, non-destructive workflow, too. One of the main things that has changed since version 9 is the rendering speed, but there are a lot of updates to each of its modules. DxO OpticsPro will read the metadata in your photo and prompt you to download the appropriate camera/lens module to compensate for any known defects to that combination, thus maximizing the quality of your work at an early stage in your workflow.
Interested in this deal? Try it here.