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I use DxO PhotoLab, which came with perpetual license. I paid ~$100 for PhotoLab 1 and ~$70 for an upgrade to PhotoLab 4, and haven't upgraded since. I thought it was well worth it.

(I plan to upgrade to a newer version eventually, but thought I would upgrade my computer first)

Capture One or DxO. These are the only ones as good as Lightroom in their rendering. I'm afraid they are both much more expensive.

ON1, ACDSee, Luminar, Zoner, Silkypix, Radiant, RAW Power, Photomator are other options, but IMO have rather significant flaws that make them less good.

Have a look at AfterShot Pro. Very fast, powerful, and easy to use.

Also, thoroughly abandoned for half a decade. No recent camera support whatsoever, no feature updates.

I switched from Lightroom to Nitro (macOS, iOS, iPadOS), by the former Apple lead for Aperture, Photo, and other digital imaging technologies. Two years later, I'm very happy with that choice. https://www.gentlemencoders.com/about/