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.

Paint.net is a free and very capable image editing software for Windows. Great alternative to Photoshop for people that do not need all the stuff PS offers.

Pixelfed is an image sharing platform with focus on Privacy, Safety and Security, an ethical alternative to centralized platforms like Instagram. Federated, Ad-Free, No algorithms, No 3rd party analytics or tracking. Can run on your own server.

Maximize your photo editing and organizing abilities across platforms with non-destructive editing in high resolution and 1 TB of cloud storage. Harness simple tools like sliders to achieve your ideal image and automatically apply tags. Access and utilize Lightroom on mobile, web, or desktop.

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.

Sly is a user-friendly, offline image editor requiring no expertise; adjust brightness, contrast, apply effects, and export in JPEG or PNG formats with control over metadata.

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.

Instagram offers advanced photo editing and sharing capabilities, featuring Stories, Reels, IGTV, and live-streaming. It supports interactive multimedia engagement, business analytics, and global connectivity through seamless social media integration and recommendations.

PhotoScape is a fun and easy photo editing software that enables you to fix and enhance photos.

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.