Cryptosteel is the premier indestructible backup tool for optimal offline storage of private keys, passwords and wallet recovery seeds without any third-party involvement.
Segwitaddress.org is an open source bitcoin paper wallet generator that utilizes Segregated Witness (SegWit) Pay To Witness Public Key Hash (P2WPKH) addresses and transactions. Segwitaddress.org uses the BitcoinJS library. All of the functions on this page can be ran offline.