Bip39 js https://franciscougju442.bravesites.com/entries/general/Produce-Bitcoin-Addresses-from-Seed-Every-Little-Thing-You-Required-to-Know Although it works by using BIP32 system you can still import BIP39 seeds into Electrum wallet. Also apart from BIp32 There is certainly BIP44 Variation which some wallet use for that era of seeds. The BIP39 word list is a set of two,048 very care... https://bookmarkpath.com/story20161701/bip39-copyright-bip39-checksum-an-overview-https-dzen-ru-bip39-phrase-com