FreeSFX Audio

Download free sound effects.

http://www.freesfx.co.uk/

SoundJay Audio

Free sound effects in WAV and MP3 formats.

https://www.soundjay.com/

GR Sites Audio

Library of sound effects, sound effects free downloads.

http://www.grsites.com/archive/sounds/

Orange Free Sounds Audio

Free Sound Effect Collection, Relaxing & Background Music, Loops.Orange Free Sounds - Listen, Download, Enjoy-We Make Sounds Orange!

http://www.orangefreesounds.com/

ZapSplat Audio

Zapsplat.com is a free sound effects library featuring a high quality range of sound effects by us and our contributors. We aim to help teachers, students, aspiring creatives and anyone else gain access to a range of sound effects for their work, and work alongside a pool of talented sound designers by helping them gain valuable exposure. We currently have 14054 free sound effects to download and add hundreds more each week.

https://www.zapsplat.com/

Freesound Audio

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

https://freesound.org/browse/

SoundBible Audio

SoundBible.com offers free sound clips for download in either wav or mp3 format. They also offer free and royalty free sound effects and clips for video editors, movie scores, etc.

http://soundbible.com/