Bip39 mnemonic github https://www.giantbomb.com/profile/blathayqvn/ Regardless that it uses BIP32 method you can even now import BIP39 seeds into Electrum wallet. Also other than BIp32 There exists BIP44 version which some wallet use for the technology of seeds. If another wallet won't support a derivation route that the authentic wallet supported, https://papaly.com/1/eMEf