Note these addreses are derived from the BIP32 Extended Key
Read more at the official BIP39 spec
Read more at the official BIP44 spec
Use private keys at brainwallet.org, but be careful - it can be easy to make mistakes if you don't know what you're doing
You can use this tool without having to be online.
In your browser, select file save-as, and save this page as a file.
Double-click that file to open it in a browser on any offline computer.
Based on - https://github.com/dcpos/bip39
BitcoinJS - https://github.com/bitcoinjs/bitcoinjs-lib
jsBIP39 - https://github.com/iancoleman/jsbip39
jQuery - https://jquery.com/
Twitter Bootstrap - http://getbootstrap.com/