White Noise Messenger is described as 'White Noise aims to be the most secure private chat app on Nostr, with a focus on privacy and security. Under the hood, it uses the Messaging Layer Security (MLS) protocol to manage group communications in a highly secure way' and is a instant messenger in the social & communications category. There are more than 50 alternatives to White Noise Messenger for a variety of platforms, including Android, Mac, Windows, Linux and iPhone apps. The best White Noise Messenger alternative is Signal, which is both free and Open Source. Other great apps like White Noise Messenger are Telegram, Element, Matrix and Tox.