Bip39 utils https://penzu.com/p/2ea6922b70254307 Though it employs BIP32 strategy you may continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 There is certainly BIP44 Edition which some wallet use to the era of seeds. For instance, in case you at first build your wallet and created seed utilizing https://tripsbookmarks.com/story20104895/bip39-php-5-tips-about-bip39-checksum-you-can-use-today-https-cutt-ly-uryc5rw7