99Sounds vs Soundiron

99Sounds is an independent sound design label and free sound effects repository launched in 2014 by Tomislav Zlatić. Its collections include cinematic effects, drum samples, field recordings, rain sounds, loops, and other categories. Audio files and plugins are royalty-free for personal and commercial projects, including music, video, game development, podcasts, and sound design, and attribution is not required. The license does not permit selling or redistributing downloaded audio, either separately or as an attachment to work. It also bars use of the sounds in noise, white-noise, sleep-sound, or similar apps. Free instrument plugins are listed in VST, VST3, and AU formats. The maker says its instruments work with VST and AU hosts on 32-bit and 64-bit Windows and macOS, but not macOS Catalina. Drumplayer includes twelve kits, eight slots, stereo and multiple mono outputs, channel volume and pan, and pitch-modulation LFO. Upright Piano includes four sampled notes per octave, six dynamic layers per note, and adjustable envelope, tremolo, filter, and reverb. Sound and plugin downloads cost nothing.

Soundiron develops virtual instruments and sample libraries for songwriters, composers, and sound designers in music and media composition. Its catalog focuses on deep-sampled instruments and sound effects, primarily for Native Instruments Kontakt. Many libraries need the full retail Kontakt version; some support Decent Sampler or SFZ, with formats specified per product. Kontakt libraries run in compatible VST, AU, RTAS, or AAX host sequencers. The free Rainsong library includes rain recordings, one-shots, 58 ambience patches, and 20 sound-designed FX and ambient presets. Paid examples include Iron Pack Bundle at $39 one-time and Hyperion Strings Micro at $49 one-time. Products are delivered electronically by installer and download code. Licenses allow purchased sounds in finished commercial and noncommercial productions but restrict raw or unmixed redistribution. Soundiron supports WAV, NKI, NCW, Decent Sampler, and SFZ formats.