GIMP delivers powerful functionalities for photo retouching, image composition, and format conversion. As a versatile tool, it serves as both a simple paint program and a high-end retouching suite, and offers batch processing for mass image tasks in an accessible open-source platform.

Comprehensive raster graphics editor offering advanced photo and image editing features. Supports multiple layers, masks, alpha compositing, various color models, and has limited vector graphics, 3D, and video capabilities. Extensible via plug-ins.

Real-time image editing software supporting extensive colour spaces, unlimited layers, non-destructive edits, and a streamlined workspace for complex tasks on Windows, Mac, and iPad.

Online photo editor, which can work with PSD, XCF and Sketch files (Photoshop, Gimp and Sketch App). Convert between PSD, XCF, JPG, PNG and many other formats.

Explore this platform for free, web-based photo editing; it provides tools like overlays, double exposure, and color splash for detailed modifications plus Pro features like Influence Masks and advanced blending.

Image editing software for macOS and iOS, offering nondestructive, GPU-powered editing with machine learning features, RAW support, custom brushes, and seamless macOS integration for touch-ups, painting, and creative compositions.

A full suite of graphic design software that provides vector illustration, page layout, image editing, and tracing software. Designed for professional designers, it delivers precision tools, excellent file compatibility, and quality content for crafting professional results from creative ideas.

Edit, share, and upload photos on-the-go, or access your entire online photo library with a finger-flick using Adobe Photoshop Express for iPhone, iPad and Android.

Corel's tool provides comprehensive photo editing and design features including enhanced layers, precise tools, RAW editing, and organization capabilities such as keyword tags, auto sorting, and facial recognition, making it ideal for both novices and professionals in various projects.

Pixelitor is an open source image editor with an intuitive interface and with a special emphasis on non-destructive editing.

AliveColors is comprehensive graphics and photo editing software for Windows and Mac. It comes in Free, Home, and Pro versions, with differing levels of functionality. Boost your creativity with AliveColors!.