Pitch Ability Test - Test your Pitch Ability. Measure your pitch take over and pitch retention abilities. Know where you stand on the road to Absolute Pitch. Especially, measure the criteria: Accurately sing a named note without a reference.

Headspace - Meditation made simple. Brilliant things happen in calm minds.

GitHub Audio - Tracks events across GitHub to generate calming work music

Synctuition Meditation Program - Synctuition Meditation Program is a world’s most leading meditation app that comes with brand new 3D sounds that enhance the quality of sleep significantly.

Perfect Pitch Ear - Piano online for perfect pitch training.

Calm - Calm.com can help you reduce stress and increase calm.