Noisli - Noisli is a fantastic background noise and color generator for working and relaxing. Online soothing ambient sounds like White noise, Rain and Coffee Shop.
JustNotepad.com - A free online notepad allows you to create any text or notes in your web browser.
Noizio - Feeling that the noise of the big city is too much for you to bear?
TakeNote - A web-based note-taking app with GitHub sync and Markdown support.
MyNoise - Custom shaped online noise machines. Many Many generic sounds
PlicPad - Shareable notepad without urls