Bip39gen https://collinmmss433.lucialpiazzale.com/from-concept-to-fact-generating-bitcoin-addresses-with-bip39 Although it employs BIP32 method you can still import BIP39 seeds into Electrum wallet. Also besides BIp32 There's BIP44 Edition which some wallet use for your era of seeds. Simply because incorporating a passphrase in your seed words results in a whole new wallet, some other... https://pukkabookmarks.com/story19924468/bip39-copyright-bip39-generator-secrets-https-dzen-ru-bip39-phrase-com