There are 2 repositories under bip39-mnemonic topic.
A python tool that scans files in directories and subdirectories hunting BIP39 mnemonic seeds.
A Hierarchical Deterministic (HD) wallet that derives public and private keys from a 12-word mnemonic phrase with support for multiple cryptocurrencies
A simple go program to find the last BIP39 mnemonic word
Try to bruteforce Bitcoin mnemonic's passphrase
Find the last word of BIP39 mnemonic seeds
GYOES: Generate Your Own Entropy Seed. Generate a bip39 seed using your own bit entropy
calculate the seed xor of many bip39 bitcoin seeds
Create BIP39 mnemonic seeds from entropy obtained rolling a dice a lot of times
BIP39 Mnemonic implementation in PHP
Utility to derive addresses from a mnemonic phrase (BIP39) or keystore (XChain)
A demo of how to generate private keys from mnemonic seed phrase