Hodl Hodl is a P2P cryptocurrency exchange that allows users to trade directly with each other and it doesn't hold user funds - locking it in multisig escrow instead - which minimizes the possibilities of cryptocurrency theft and reduces trading time. Because Hodl Hodl does not hold any money (neither cryptocurrency, nor fiat) it is not subject to complex compliance procedures. All trades happen directly between users' cryptocurrency wallets.
Segwitaddress.org is an open source bitcoin paper wallet generator that utilizes Segregated Witness (SegWit) Pay To Witness Public Key Hash (P2WPKH) addresses and transactions. Segwitaddress.org uses the BitcoinJS library. All of the functions on this page can be ran offline.