Sketchpad.pro is a simple graphic editor written for the web. This drawing library uses HTML5 Canvas supported by all modern browsers (Chrome, Firefox, Opera, Internet Explorer...). You can use any device to draw on "sketchpad". Drawn sketches you can export to jpeg/png or save as .json history file.
Sketchpad.pro is using "slices of time" as inputs history to store events. This approach allows co-operating multiple users in real-time using WebSocket server.
Copy this script and paste into your page to include Sketchpad.pro from CDN server:
git clone https://github.com/cojapacze/sketchpad.git
cd sketchpad npm install gulp node server/server.js
to watch files for changes during development.