Box Breathing - Breathe in sync with this to calm yourself down

Moodwill - Create and listen for free to your perfect nature sounds environment with music to help you concentrate, relax, sleep and overall feel better.

Breathe2Relax - Breathing exercises to practice diaphragmatic breathing.

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.

Othership - Othership offers 500+ music-driven guided breathwork classes to lift you up and ground you down: kickstart your day, cultivate focus, fight fatigue, sleep deeper, regulate your emotions, and learn the science-backed how + why of breathing mechanics.

Silenz - Mix ambient noise in with the music you're listening to