4. Bitcoind RpcA client library to connect to Bitcoin Core RPC in JavaScript.
5. FoxtrotSimple and secure routing based on Bitcoin cryptography.
6. Node Bitpay ClientA Node.js module and command line client for interacting with BitPay's Cryptographically Secure API
7. Bitcore WalletA command line interface Multisig HD Wallet, based on `bitcore-wallet-service`.
9. Bloom FilterA JavaScript bloom filter suitable for use in Bitcoin Connection Bloom Filtering
14. BitauthAuthenticate with web services utilizing the same strategy as Bitcoin.
15. BitcoreA full stack for bitcoin and blockchain-based applications
17. WalletBitpay Wallet (formerly Copay) is a secure Bitcoin and other crypto currencies wallet platform for both desktop and mobile devices.
19. bitpay-goPowerful, flexible, lightweight interface to the BitPay Bitcoin Payment Gateway API.
23. bitcoin-brandThe Bitcoin logo, icon, and color. For the BitPay logo and color, see: https://github.com/bitpay/bitpay-brand
28. pgp-keysAn additional place for distributing our PGP public keys
29. bwdbA bitcoin wallet database for wallets with millions of addresses and transactions