What camera did you get? I use Canons, and the software comes with an image browser. I have several photo editing programs on my Mac, but usually use Aperture or Adobe Photoshop Elements.
Aperture keeps the masters and versions, but to export them into a file that I can upload to Photobucket or my document files, I have to save it as something , so I pick Jpeg or TIFF or whatever.
So, it goes edit, save as a copy, and then you pick where you will stash it. That leaves the RAW file as you took it, so you can play with it again later.
Likely all you need to do is explore your photo application(s) and play until it does what you want.
Killdeer