AudioSet by Google - A massive dataset of manually annotated audio events
Power Nap App - Best napping timer with relaxing sleep sounds
Audio Annotation by Datasaur - Datasaur's Audio Annotation Tool allows you to improve the quality of your audio transcription with their easy-to-use interface.
Sleepy Baby - Help your baby sleep with the Sleepy Baby soundboard.
Tree.fm 🌲 - Tune into forests from around the world
Meditato - Meditation and sound sleep to make your life better