Bip39 tangem https://www.4shared.com/s/fAf7kF4dLku Although it employs BIP32 method you can still import BIP39 seeds into Electrum wallet. Also aside from BIp32 There exists BIP44 version which some wallet use for the technology of seeds. Subscribe to our weekly mailing list and have most current copyright information, sources and guides towards https://telegra.ph/Producing-Custom-Bitcoin-Addresses-A-Take-A-Look-At-BIP39-Strategies-06-28