Bip39 Phrase Generator. Regardless that it takes advantage of BIP32 approach you'll be able to however import BIP39 seeds into Electrum wallet. Also other than BIp32 There may be BIP44 Variation which some wallet use with the generation of seeds. From the movie down below you can enjoy the seed https://sethkxier.wikigdia.com/6715635/the_anatomy_of_a_bip39_phrase_entropy_words_and_stability