Sounds of Earth - Listen to relaxing ambient sounds of nature
Stealthy: Secret Messenger - Chat anonymously with friends & strangers
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.
Vuash - Send secret messages safely.
Noizio - Feeling that the noise of the big city is too much for you to bear?
Phonebot - Make phone calls from within a Slack channel