Sketchpad
Sketchpad is a cool platform that you can use to make awesome drawings using text and a wide range of colours and patterns.
Quickmaps
Quickmaps allows users to draw a quick map. It is very easy to use but it requires a sign up which is completely free.
Tux Paint
This is a free drawing program for children ages 3 to 12. It has a user friendly interface, and fun sound effects. It is available for download for Windows XP, 2000, Vista 7.
Drawing Game Maker
This is a free drawing program for children with many nice options. It lets users draw with many different pens, and put stamps on their drawings. It is available for download for free.
Livebrush
Livebrush is a drawing application. It employs an easy-to-use brush tool that reacts to your gesture. By combining simple motion controls with brush styles, Livebrush offers a fun and unique way to create graphics.
10- Chogger
Chogger is simple platform where you can use different tools to create awesome drawings. It is free and web based.
Colour Lovers
This is a creative community where people from around the world create and share colors, palettes and patterns, discuss the latest trends and explore colorful articles.
Psyko Paint
Psykopaint is a website where users learn and enjoy painting using a wide variety of tools such as brushes, pencils, and many more. It is so much fun to use.
Kerproof
You have probably already heard about this tool. Kerprof has a section dedicated for users to create and exercise their drawing skill using several tools.
Pencil
Pencil is an animation/ drawing software for Mac OS X, Windows, and Linux. It lets you create traditional hand-drawn animation ( cartoon ) using both bitmap and vector graphics. Pencil is free and open source. it requires download.