Absolutely. The server-side code is also open-source and can be found here: https://khanacademy.kilnhg.com/Code/Website/Group/stable https://khanacademy.kilnhg

Absolutely. The server-side code is also open-source and can be found here: https://khanacademy.kilnhg.com/Code/Website/Group/stable https://khanacademy.kilnhg.com/Code/Website/Group/stable Of course, we write the software specifically for the Khan Academy site so you would need to change some parts of it to adapt it to other uses, but everything is out in the open for anyone to work on and use.