Seed Guardian
See it in action at https://groestlcoin.org/seedguardian
##what-is-it This software shares your BIP39 12 words seed in 15 words shares. If you share your seed in 3 shares with a threshold of 2, you need 2 shares to reconstruct your seed, so you could lose one share, and somebody finding one share can't reconstruct your seed.
##Libraries This software is built using following libraries
- angular.js
- bootstrap.css
- secrets.js
- bip39.js