Mac OS X Softwares to Merge photos

GIMP (GNU Image Manipulation Program) is a powerful, free, and open-source raster graphics editor used for image manipulation, retouching, composition, and authoring. It supports a vast array of file formats and provides sophisticated tools comparable to commercial alternatives, making it a versatile choice for photographers, designers, and artists.

Fotor is a comprehensive online photo editor and design tool, offering a wide array of features for both professional image manipulation and creative graphic design. It combines robust editing capabilities with user-friendly design templates.

PhotoLine is a comprehensive raster and vector graphics editor for Windows and Mac OS X, offering advanced image manipulation, color management, and desktop publishing capabilities.

Acorn is a powerful yet accessible image editing software designed for macOS. It offers a comprehensive toolset for photo manipulation, digital drawing, and graphic design, catering to both hobbyists and professionals.

Affinity Photo is a professional raster graphics editor designed for photographers and digital artists on macOS and Windows. It offers powerful tools for image editing, retouching, and complex layer manipulation without a subscription model, making it a compelling alternative to industry-standard software.

Autodesk Pixlr is a robust, free online photo editor offering a wide array of tools for image fixing, adjustment, and filtering directly within your web browser. It's ideal for both quick edits and more complex manipulations without requiring software installation.