We usually use a large number of websites, apps and other services to manage passwords using the self built Bitwarden password server, and most websites need us to register an account to use them. However, too many websites are inconvenient to manage. Especially now, data leakage is becoming more and more common, and password leakage services of major manufacturers are frequent. Using a single common password will bring us great risks. I used and compared many password software. Bitw was finally selected