Keystone bip39 https://atavi.com/share/xbwf7vz16jgof Although it employs BIP32 system you are able to continue to import BIP39 seeds into Electrum wallet. Also apart from BIp32 There exists BIP44 Edition which some wallet use for that technology of seeds. Want to check which wallets assist the BIP39 mnemonic recovery seed phrase? Read https://bookmarkunit.com/story19740005/bip39-vs-slip39-the-definitive-guide-to-bip39-converter-https-dzen-ru-bip39-phrase-com