Recs.
Updated
Darktable is non-destructive photo editing software that supports RAW files from over 400 cameras and can open a wide range of file types.
Photos can be managed by a module called Lighttable, the Darkroom module lets you edit photos.
SpecsUpdate
Pros
Pro Supports tethered capture
On the camera set it to use USB Remote Open Darktable, on the left side under Import, click scan for devices. The camera should appear. Click on tethered shoot. Next on the right side look for the gear icon above the battery n/a and click it. go to the session options tab, and change the base directory to the location you want to save photos. close that settings window and try taking a picture. It should come right up.
Cons
Recommendations
Comments
Out of Date Pros + Cons
Con No official Windows version
Whilst official builds exist for Linux and OSX, this isn't the case for Windows (though unofficial versions do exist).
