MediBang Paint Pro is a free cross-platform paint and drawing tool (a rewrite of FireAlpaca), aimed at manga artists but usable by anyone.
There's a strong core drawing engine with customisable brushes, pressure sensitivity, lots of layer controls and a pile of powerful tools.
The free cloud storage and Windows/ Mac/ iPad/ Android versions mean you really can run the program anywhere.
There's also strong support for collaborating with others, forming groups with other users, working on the same files, and sharing custom tones, brushes and more.
Extras include free downloadable patterns, textures and more, guides for drawing in perspective, and even Voice to Text input.
What's the key new features in 12 (see release history for more info):
- New blending features have been added! Soft Light, Hard Light, Hue, Saturation, Color and Brightness.
- You can now import TIFF format files!