The mission of pdsounds is to capture the acoustic phenomena in the environment of our daily lives and contribute them to the public domain for free and unfettered reuse. Search for something specific or browse the catalog of public domain sounds.

Internet archive - Welcome to Open Source Audio

One subsection of the mighty Internet Archive collection, the open source audio section is primarily full of reusable Creative Commons-licensed sound files. You can also find usable audio files pocketed throughout the broader Audio collection as well.

opsound - Free love, free music.

Opsound is a gift economy in action, an experiment in applying the model of free software to music. Musicians and sound artists are invited to add their work to the Opsound pool using a copyleft license developed by Creative Commons. Listeners are invited to download, share, remix, and reimagine.

soundtransit- Search for sound

A searchable archive of field recordings from all over the world, soundtransit’s community shares recordings under the Creative Commons Attribution license.