Epidemic Sound - Website with licensed music to use in youtube videos

Freesound - The Freesound Project is a collaborative database of Creative Commons licensed sounds.

SoundsCrate - SoundsCrate is one of the reliable websites that is designed to provide thousands of sound effects and royalty-free music, making you edit or create your own album.

Mixkit Free Sound Effects - Mixkit Free Sound Effects is a website that is introduced for incredible free sound effects, making you use in your cinematic projects without any hurdle.

Sample Focus - The easiest way to find the perfect audio sample

RetroArch - RetroArch is a frontend for emulators, game engines and media players.