JustNotepad.com - A free online notepad allows you to create any text or notes in your web browser.
Notepad Online - Notepad online is a free online notepad website that allows you to create online notes, save notes, text edit, find and replace word, convert cases etc.
TakeNote - A web-based note-taking app with GitHub sync and Markdown support.
OnlineNotepad.org - Free browser-based text editor
PlicPad - Shareable notepad without urls
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.