RasterGraphics

Aseprite

Animated sprite editor and pixel art tool

Vis

Color Picker

Choose colors from the picker or the screen

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Converseen

A batch image processor

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Entangle

Tethered Camera Control & Capture

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Extra files for GIMP

Patterns, gradients, and other extra files for GIMP

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Eye of GNOME

Browse and rotate images

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Eye of MATE

Simple image viewer

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Gwenview

Image Viewer

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KolourPaint

Paint Program

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Krita

Digital Painting, Creative Freedom

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MyPaint

Painting program for digital artists

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Nomacs

View and edit images

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gThumb Image Viewer

View and organize your images

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nip2

Image processing spreadsheet

Vis