I just love. It's easy to use and share
OnlineNotepad.org - Free browser-based text editor
Element.io - Secure messaging app with strong end-to-end encryption, advanced group chat privacy settings, secure video calls for teams, encrypted communication using Matrix open network. Riot.im is now Element.
Shrib - Take notes online. 'Free and no login' or 'AI assistant, visitor stats, privacy and productivity': super simple, with publishing and markdown, share to all devices.
ChatSecure - ChatSecure is a free and open source messaging app that features OTR encryption over XMPP.
notepad.pw - notepad.pw is a online notepad which allows you to save your text in the cloud with features like
Otr.to - A secure peer-to-peer chat in your web browser.