One-Time Secret - One-Time Secret is a way to share sensitive information simple and secure.
Gufw - Gufw is an easy, intuitive way to manage your Linux firewall.
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.
NetLimiter - NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.
Password Pusher - Go Ahead. Email Another Password.
Little Snitch - Little Snitch is a firewall application that monitors and controls outbound internet traffic.