One-Time Secret - One-Time Secret is a way to share sensitive information simple and secure.
Lastpass - LastPass is an online password manager and form filler that makes web browsing easier and more secure.
Password Pusher - Go Ahead. Email Another Password.
1Password - 1Password can create strong, unique passwords for you, remember them, and restore them, all directly in your web browser.
Password.link - Securely send and receive secrets using a one-time link. The secret is encrypted and decrypted in the browser using an encryption key only known by the user. Has features like notifications, teams, API. Trusted by IT teams all around the world.
bitwarden - Bitwarden is a free and open source password management solution for individuals, teams, and business organizations.