Bip39 javascript https://www.storeboard.com/blogs/ai-for-small-business/browsing-the-globe-of-bitcoin-addresses-the-value-of-bip39/6240727 Regardless that it takes advantage of BIP32 system you could still import BIP39 seeds into Electrum wallet. Also besides BIp32 There may be BIP44 Model which some wallet use to the generation of seeds. By way of example, when you to begin with buil... https://bookmarkrange.com/story22248006/bip39-wallet-android-helping-the-others-realize-the-advantages-of-bip39-recovery-tool-https-linktr-ee-bip39