Experiment with a (Free Libre Open Source) browser based graphic tool.

Scri.ch
Drawing on a page:
http://about.scri.ch/
http://scri.ch/

VVVV.js
Patch, learn, remix and share
http://vvvvjs.com/

Framasoft
Online tools for writing and more
http://framasoft.net/
https://framindmap.org/c/login
http://framavectoriel.org/
https://framadrop.org/

Threejs.org
3D editor
http://threejs.org/editor/

Flocking
Sound coding
http://flockingjs.org

Timbre.js
Sound creation
http://mohayonao.github.io/timbre.js

Gibber
Creative coding environment
http://charlie-roberts.com/gibber

CoffeeCollider
Supercollider online
http://mohayonao.github.io/CoffeeCollider/

PaperJS
Vector Graphics Scripting
http://paperjs.org/

p5js.org
Processing to javascript
Try out: http://p5js.org/examples
install: https://github.com/processing/p5.js-editor

Metaflop
Font creation
http://www.metaflop.com

Hotglue
make websites
http://hotglue.me/
Install: http://hotglue.org
https://github.com/k0a1a/hotglue2

Tributary
Javascript visual code
http://tributary.io/