BookWidgets - BookWidgets is an excellent application that let you create engaging exercises in minutes and easily share a varied variety of beautiful and fun activities with your classroom and others.

Moszen - Moszen is a free web service that provides ambient sounds from natural environments to help you relax and avoid stress in your daily life.

Padlet - Visual boards for organizing anything.

Noises Online - Premium masking sounds

Socrative - Socrative helps teachers engage the class with educational activities to measure and visualize...

SoliCall Pro - Removes noise & echo from any VoIP call. Can also be used for call recording.