Bip39 Mnemonic Phrase Tool Though it uses BIP32 approach it is possible to however import BIP39 seeds into Electrum wallet. Also in addition to BIp32 There's BIP44 Edition which some wallet use to the era of seeds. It is possible to see the total supply code in standalone, offline html https://madbookmarks.com/story18520225/bip39-passphrase-inheritance-the-fact-about-bip39-phrase-that-no-one-is-suggesting