If you use multiple camera brands, or want to preview your raw files directly for focus assessment and composition prior to, or after, copying to your hard drive, consider Fast Raw Viewer (Mac and PC).
It is a minimal financial investment ($24 USD) and is brand agnostic. Fast raw file rendering, as in no need to use JPEG proxies to assess the raw file. You can choose to view the rendered raw file, the JPEG embedded in the raw file (a low res proxy that will reflect picture styles, white balance, optical corrections etc.) and, if you shoot JPEG+RAW and the JPEG file is next to the RAW file on your card or drive, the full-res JPEG file. You can toggle amongst these on the fly.
You can check focus with virtual focus peaking masks (an edge mode and contrast detail mode), boost shadows and pull down highlights with the press of a keyboard shortcut to assess shadow recovery and highlight headroom, and enable a RAW histogram so you can actually see which channels are really clipped in the raw file before white balance and JPEG tone curve application. The app also provides over and underexposure warnings and statistics, per channel, of the raw data, not the JPEG. There are white balance presets and one-click custom white balance to aid in visualization of the raw file with your intended color balance.
You can flag images to be moved on your card to a rejects folder (and automatically deleted, if you want) and you can move or copy keepers from the card media to a hard drive once the assessment of your files is complete. You can also select images and choose to open them in whatever external application you choose - you can configure the app with whatever external editing apps you choose. So, for example, you could send your selected raw files to DPP from FRV for editing and export.
You can apply star ratings, keywords, and exposure offset which will be read by ACR/Lightroom if you want it to be read and incorporated into the LR database. You can also remove the hidden exposure boost that ACR applies to your raw file, and you can view your raw files in linear gamma instead of with a contrast curve applied.
It has a metadata viewer that you can configure to show just the EXIF data you want to see.
This tool is superior to most brand-dedicated raw converters that offer culling and rating tools, and is brand agnostic so you are not locked in to a proprietary workflow, or multiple proprietary workflows.
Free trial here:
https://www.fastrawviewer.com
It will be the best $24 you ever spent on imaging software.
Kirk