Krita

Krita provides a free and open source painting program for image creation and manipulation. It focuses on painting, illustration, concept art, and other creative work. The application supports opening, saving, editing, and authoring HDR and scene-referred images. Users access over 100 preloaded brushes, customizable brush engines, and stabilizers for smooth strokes.

Features:

• Clean and Flexible Interface with customizable layout, over 30 dockers, and dark/light themes
• Beautiful Brushes with over 100 preloaded options
• Brush Stabilizers including three smoothing methods and Dynamic Brush tool
• Brush Engines with nine types such as Color Smudge, Shape, Particle, and Filter
• Animation features with multiple layers, audio support, timeline for 1000s of frames, onion skinning, tweening, and video export
• GPU Enhanced canvas with OpenGL or Direct3D
• PSD Support for opening and saving files
• HDR Painting with OCIO and OpenEXR