One-Time Secret - One-Time Secret is a way to share sensitive information simple and secure.
KeePass - KeePass is an open source password manager. Passwords can be stored in highly-encrypted databases, which can be unlocked with one master password or key file.
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.
1ty.me - If you need to send a password or some other form of simple but sensitive information to someone...
Dashlane - Dashlane is a secure way to bypass tedious logins, forms, and purchases online. Save all of your information and save time in your online transactions.