Bisq is an open-source desktop application that allows you to buy and sell bitcoins in exchange for national currencies, or alternative crypto currencies.

Unlike traditional online exchanges, Bisq is designed to be:

• Instantly accessible – no need for registration or approval from a central authority.
• Decentralized – there is no single point of failure. The system is peer-to-peer and trading can not be stopped or censored.
• Safe – Bisq never holds your funds. Decentralized arbitration system and security deposits protect traders.
• Private – no one except trading partners exchange personally identifying data. All personal data is stored locally.
• Secure – end-to-end encrypted communication routed over Tor.
• Open – every aspect of the project is transparent. The code is open source.
• Easy – we take usability seriously.

https://bisq.network/