Photo software for macOS

digiKam is a free and open-source image organizer and tag editor written in C++ using the KDE Frameworks.

Darktable (stylized as darktable) is a free and open-source photography application and raw developer. Rather than being a raster graphics editor like Adobe Photoshop or GIMP, it comprises a subset of image editing operations specifically aimed at non-destructive raw image post-production. It is primarily focused on improving a photographer's workflow by facilitating the handling of large numbers of images. It is freely available in versions tailored for most major Linux distributions, macOS, Solaris and Windows and is released under the GPL-3.0-or-later software license.

stitching software

digital photograph manipulation app by Apple Inc

photo editing software

UFRaw (originally named after its founder '''Udi Fuchs's Raw, the backronym Unidentified Flying Raw''' replaced it as the full name) is an application which can read and manipulate photographs in raw image formats, as created by many digital cameras. UFRaw is available as both as a stand-alone program and as a plugin for GIMP (only on non-Microsoft Windows systems). As a stand-alone program, UFRaw can be invoked with a graphical interface, or as a command line batch processing utility.

Software for editing, converting and managing images in raw data format (RAW)

PTGui is a panorama photo stitching program for Windows and macOS developed by New House Internet Services BV. PTGui was created as a GUI frontend to Helmut Dersch's Panorama Tools. It features its own stitching and blending engine along with compatibility to Panorama Tools. PTGui supports telephoto, normal, wide angle and fisheye lenses to create partial cylindrical up to full spherical panoramas. PTGui can handle multiple rows of images.