Top 20 Alternatives to Seashore in Free Image Editing Software

Seashore is an open‑source macOS image editor that offers basic Photoshop‑style tools such as layers, gradients, and filters. If you’re looking for other free image‑editing programs—whether desktop‑based or web‑based—here are 20 alternatives you can try.

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Top Competitors to Consider
#2 GIMP

Feature‑rich open‑source raster editor with layers, masks, filters, and a huge plug‑in ecosystem.

#3 Krita

Professional digital painting and illustration suite with advanced brush engines, layer management, and HDR support.

Lightweight Windows editor offering layers, effects, and a simple UI; extensible via community plug‑ins.

Open‑source vector graphics editor that also handles raster images via extensions; great for mixed‑media projects.

Web‑based Photoshop‑compatible editor that runs entirely in the browser; supports PSD, XCF, and Sketch files.

#7 Pixlr X

User‑friendly online editor for quick edits, filters, and overlays; ideal for beginners.

#8 Pixlr E

Advanced online editor with layer support, blend modes, and a wide range of adjustment tools.

#9 Pinta

Simple, open‑source drawing and image‑editing program inspired by Paint.NET; works on Windows, macOS, and Linux.

#10 MyPaint

Focused on digital painting with a distraction‑free canvas and a massive brush library.

#11 Darktable

Open‑source photography workflow application for raw development and non‑destructive editing.

Powerful cross‑platform raw processor offering advanced color correction, noise reduction, and batch editing.

#13 LightZone

Free, non‑destructive photo editor with zone‑based editing and a clean, intuitive UI.

All‑in‑one photo editor with collage, batch editing, GIF creation, and basic retouch tools.

Web‑based design platform offering simple image editing, templates, and drag‑and‑drop tools.

#16 Fotor

Online editor with one‑click enhancements, HDR effects, and collage maker; free tier includes core features.

Free cross‑platform editor with AI‑driven filters, advanced color tools, and batch processing.

Vector‑based design app that also supports bitmap import and basic raster adjustments.

#19 Vectr

Free, web‑based vector editor that can be used for simple image composition and export to PNG/JPEG.

Lightweight Windows editor offering filters, layers, and batch processing; free version provides essential tools.

#21 GIMPshop

A GIMP fork that mimics the classic Photoshop UI, making the transition easier for Photoshop users.