Raw Therapee Raw converter

Raw Therapee has been around a while, it's gained popularity recently with people switching from Adobes cloud service, it's a raw editor, and can be used as a stand alone or linked to photoshop or more usually Gimp.
The program has plenty of adjustments for the normal editing but remember this is a raw editor, it doesn't do the clever stuff photoshop can, only raw editing.  To be fair it's got some stuff even photoshop doesn't have, like the choice of demosaicing algorithms.
The interface isn't exactly friendly and will take some getting used to, but it could prove a useful tool.