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Bridge bidding system ♣♦♥♠
My favorite contract bridge bidding system in Hungarian: Bridzs licitrendszer
WarpWallet with BIP39 compatible Mnemonic Code
A brain wallet generator that uses scrypt and pbkdf2 for key stretching: WarpWallet
Source available: github.com/gallizoltan/warpwallet
Fully compatible with the original WarpWallet, but also shows 24-word mnemonic seed!