Bip39 github https://hectorswwo172.bearsfanteamshop.com/picking-the-right-tools-for-your-bip39-generation-demands Though it utilizes BIP32 system you can even now import BIP39 seeds into Electrum wallet. Also apart from BIp32 You can find BIP44 Model which some wallet use with the generation of seeds. The BIP39 word list can be a list of 2,048 very carefully picked out https://www.storeboard.com/blogs/ai-for-small-business/browsing-the-globe-of-bitcoin-addresses-the-value-of-bip39/6240727