Headspace - Meditation made simple. Brilliant things happen in calm minds.
Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
Calm - Calm.com can help you reduce stress and increase calm.
AlarmDJ - Online Alarm Clock - Use YouTube videos or MP3 files as alarm sound. Works offline.
Pacifica - Stress and anxiety relief through beautiful CBT tools
Free Alarm Clock - Free Alarm Clock is a free, full-featured and user-friendly computer alarm clock for Windows.