99Sounds

99Sounds is a boutique sound design label based in Belgrade, Serbia, that releases free sound effect libraries curated and recorded by professional sound designers. The catalogue has expanded through 2025-2026 with several notable releases: Cinematic Sounds (99 free royalty-free cinematic effects from Flame Sound's commercial catalogue), The Warehouse (116 horror sound effects in 24-bit WAV by Richard Gould), plus various themed collections covering sci-fi, glitch textures, retro arcade, and electronic sounds.

All audio is provided as lossless 24-bit WAV files, with licensing typically being Creative Commons or a custom royalty-free license that explicitly clears commercial use including podcasts. The catch is that licensing varies slightly pack-to-pack, so verify before use, but most modern 99Sounds releases are commercially cleared.

Where it shines is exactly the curation and quality. These aren't crowdsourced uploads — every pack is designed and recorded by working sound designers, often pulled from commercial catalogues as free promotional releases.

The cinematic and ambient texture libraries are particularly hard to find for free elsewhere. Where it falls short is the pack-based browsing model. You download whole libraries rather than searching individual files, which means committing to a category at a time and finding individual cues by audition rather than search.

Update cadence has slowed in recent years. Best fit for indie podcasters and hobbyists who want professionally-recorded SFX packs at zero cost.