Bip39 typescript https://www.sbnation.com/users/typhanhmdy Even though it uses BIP32 approach you can still import BIP39 seeds into Electrum wallet. Also other than BIp32 There's BIP44 Variation which some wallet use for your generation of seeds. Due to the cryptographic design of BIP-39, a weak passphrase doesn't reduce the security of one https://socialfactories.com/story5867593/bip39-history-bip39-ian-coleman-for-dummies-https-x-com-tundra838554