Ardesia - Ardesia is an usefull software for use your desktop as a Sketchpad.
Epic Pen - A windows tool for drawing over your desktop and applications
gInk - An on-screen on-screen annotation software for Windows.
Krita - Krita is a professional FREE and open source painting program. It is made by artists that want to seaffordable art tools for everyone. Concept art. texture and matte painters, illustrations and comics.
Arabic Speech to Text - Arabic Speech to Text app enables users to enter the text by using image scanning, voice recognition, and text features to start the conversation without much of a stretch.
PaintTool SAI - Learn to draw in different ways.