Bip39 dart https://collinmmss433.lucialpiazzale.com/from-concept-to-fact-generating-bitcoin-addresses-with-bip39 Though it takes advantage of BIP32 approach you can nevertheless import BIP39 seeds into Electrum wallet. Also other than BIp32 there is BIP44 Model which some wallet use with the technology of seeds. This extra complexity boosts the threat of misplacing the passphrase, and... https://web.archive.org/web/20250626195628/https://bip39-phrase.com/