*MyPaint has a minimal interface and features exclusively for drawing, there are no typical for image editors, such as highlighting, zooming or filters.
*Main functions use the keyboard shortcuts, for example to increase (reduce) the brush to 'F' and 'D' respectively, the hide panel on 'Tab', etc.
*Great set of brushes and their settings, import/export, create and modify brushes and their groups. There are such brushes like blur, color mixing, erasing, etc.
*Support tablet. App is designed to work with it.
*Visual color picker in the color triangle under the cursor or window, supports RGB and HSV.
*Endless canvas delivers from within, giving unlimited scope for creativity, saving only the used portion.
*Supports OpenRaster (.ora), png and jpg, which enables further processing in other image editors or work with layers in editors that support OpenRaster, for example krita.
*Initial support for layers, change the transparency and copy/paste.
*Cross-platform. The program is available for Linux, Windows and Mac OS.
Changes since the last stable release:
*New intuitive Inking tool for smooth strokes.
*New Flood Fill tool.
*Automated backups of your working docs, with recovery on startup.
*Improved symmetry-setting and frame-setting modes.
*New workspace UI: two sidebars, with dockable tabbed panels.
*Smoother scrolling and panning.
*New brush pack.
*New brush and color history panel.
*New layer trimming command in frame options.
*Added layer groups.
*New layer modes: several masking modes added.
*Add display filters: greyscale, simulate dichromacy for trichromats.
*New color wheel options: Red/Yellow/Blue, Red-Green/Blue-Yellow.
*Uses dark theme variant by default.
*Clearer icons, prettier freehand cursors.
*Device prefs allow glitchy devices to be restricted.
*Eraser mode no longer changes the size of the brush.
*New vector layers, editable in an external app (Inkscape recommended).
*New fallback layer types: non-PNG image, data.
*More kinds of images now work as backgrounds.
*Improved Windows support
*Ported to GTK3.
*Accelerator map editor has moved to preferences.
*Many other bugfixes, translations, and code quality improvements.
sudo add-apt-repository ppa:achadwick/mypaint-testing sudo apt-get update sudo apt-get install mypaint mypaint-data-extras