GIMP (GNU Image Manipulation Program)
Type: Open-source, desktop application (Windows, macOS, Linux)
Highlights: Advanced and powerful—think Photoshop-level editing with layers, masks, filters, and a plugin architecture for endless extension.
Why use it: You get a fully featured image editor without cost. Great for detailed retouching, digital painting, batch editing, and even animation via plugins
Photopea
Type: Browser-based (runs fully in-browser, local processing)
Highlights: Offers a Photoshop-like interface with support for PSD, AI, and other advanced file formats. Everything runs locally—no uploads or extra software needed
Why use it: Ideal for quick edits on any device without installation, especially if you’re already familiar with Photoshop’s layout. Good for editing PSD files across platforms.
Pixlr (Editor & Express)
Type: Browser-based with optional mobile apps
Highlights: Full-featured online image editor with AI enhancements, background removal, batch editing, and both express (simpler) and advanced modes
Why use it: Perfect blend of ease and power—suitable for both beginners and intermediate users, with smart tools for fast editing and creative effects.