FreeMind | freemind.fit

潮汐是一款大自然声音主题的身心健康应用，在快速繁复的日常生活中，帮你保持专注、减压放松、睡得更好。通过我们提供的自然声音场景，配合「专注」与「睡眠」两大功能模块，从快节奏的当下抽离，进入另一个平和安静的时空——减少焦虑与压力、保持专注不分心、获得更好的睡眠。

MediaCollege.com is a free resource site, suitable for anyone with an interest in audio-visual media. Tutorials and articles include everything from video production to website design.

AudioTag.info is a free music recognition service. It allows identifying almost any unknown piece of music recording easily by means of a sophisticated proprietary audio fingerprinting algorithm.

myNoise sets the standard for online background noise machines and interactive soundscapes.

Freesound: collaborative database of creative-commons licensed sound for musicians and sound lovers. Have you freed your sound today?

myNoise sets the standard for online background noise machines and interactive soundscapes.