The three listed here are some of our favorites.

Windows, Linux, macOS, BSD, and Unix.

Drawing tools surpass other programs.

Scribus

Henrik Hüttemann / Wikimedia Commons / CC BY-SA 4.0

Steep learning curve for those new to graphics programs.

No support for InDesign and QuarkXpress file formats.

Scribus is a free desktop publishing software with many of the features of pro packages.

Inkscape

If you do, however,there are many tutorials availableto get you started.

Flexibility for Many Types of Tasks: Inkscape

Similar in capabilities to Adobe Illustrator.

Intuitive, especially for Illustrator users.

Gimp

Works on Windows, macOS, and Linux.

Can be buggy when working with other file formats.

Documentation is not as organized as it could be.

Would benefit from more keyboard shortcuts.

A popular, free, open-sourcevector drawingprogram, Inkscape uses thescalable vector graphics(SVG) file format.

Inkscape is similar in capabilities to Adobe Illustrator and CorelDRAW.

Open-Source Photoshop Alternative: GIMP

Comparable in features to Adobe Photoshop.

Lots of community support.

Compatible with Photoshop plugins.

Geared toward creating and editing single images.