Native Instruments Kontakt comes with a huge sample library, featuring well over 1,000 instruments spanning a wide range of styles.

If that’s not enough for you, there are also many free Kontakt instruments available for download on the internet. In the list below I have collected some of them. Let me know if anything is missing and I will add it to the collection.

  • Alex Juno (KVR): Korg DW8000 collection.
  • Alpine Project: Brass and Woodwind instruments.
  • Artvera Music: Exposure.
  • Atom Hub: Percussive and tonal instruments.
  • Audio Emperia: Deconstruct and Epic Trailer Sounds.
  • Audio Ollie: Mute ultra low tuned palm mutes.
  • Autodafe: G&S Custom Work Drum kit, Acoustic Bass, Mega Drum Machines Collection, Pianowa, and more.
  • Bengt Nilsson: Intimate Piano and Headroom Piano (links to V.I. Control forum).
  • Bigcat Instruments: Piano, percussion, guitar, organ, and much more.
  • Blakus: pocketBlakus solo cello.
  • BOLDER Sounds: DIY Music Box, Medieval Psaltery, Suspended Slate Rocks Demo, Tibetan Granular Textures, Tibetan Singing Bowls Demo, Toy Piano, Wind Chimes Demo.
  • Channel Robot: Grid Machine Free Chain Drums, Matrix & Matrix Drums, FreeForm version 1.2 update and FreeForm 1.1 (requires account, which is also free).
  • Chiqui-Audio: Recorder, Melodica, Music Box, and The Mermaid (female vocal).
  • Cinematique Instruments: KLANG series, Landscape, Sagezahn-Saw, Cement, Chimes and more.
  • Cinesamples: Mister Rogers’ Celeste, ToyXylo, Accent Pianos, Twisted Psaltry, Tongue Drum, and Kalimba.
  • Christian Schwenk: ‘Studio 49 Royal Percussion’ xylophone (direct download).
  • Christoph Hart: Volker, the funky melodica.
  • Cosmosis (KVR): Groovy Tunes Keyboard.
  • Crypto Cipher: Tabla Mouth Percussion, Double Sided Hand Drum & Granular Pad, and more.
  • David Das: Valentine’s Day Freebie.
  • Eamon Coughlan: Pipa, Irish Bouzouki, Garklein, Khlui, Khloy, Politiki Flogera, Shakuhachi, Pennywhistle, Ocarina, Bird Whistle, and more).
  • Eduard Telik: ETI Roads Rhodes Mark II electric piano.
  • Embertone: Ancient Voices, Intimate Strings LITE, Atmoraffe, Ivory Wind and more.
  • Enjoy Samples: Room Tone and 50s Piano.
  • Fabel2112: Fairlight CMI IIx (502 patches).
  • Fairly Confusing Waveforms: Beat Assembler 48, Rekombinator, The Device, Arctic Rooster and more.
  • Fluffy Audio: AURORROR, Simple Flute, My Log Drum percussion instrument.
  • ForceSampling: Afterlife Free (1 GB, 100 nki’s).
  • Fracture Sounds: Desk Bell, Sleigh Bells, Emotional Recorder and Pumpkin Patch.
  • FrozenPlain: Victorian Music Box.
  • GBR Loops: Indian Real Electric Bass.
  • Goldbaby Productions: TekDrum vs AnalogHeat, PPG Wave 2.2, Hapi vs Xylophone, The Fat H3500, and many more.
  • Handheld Sound: Mini Naal, Table Drum, PianoBoom, Tin Can & more…
  • Have Instruments: Ristretto Editions of Cello Textures Acoustic, Electronic and Dystopian.
  • Hephaestus: Oboe, Steinway Grand Piano, Bouzouki, Hang Drum, Clarinet & more…
  • Hideaway Studio: Vintage synth and sampler + discrete tube synth instruments.
  • Hollow Sun: Limited-time Freepacks so check regularly.
  • Homegrown Sounds: Kosmology/Multiverse – FreeFall free version of Kosmology with 120 instruments.
  • Humanworkshop: AnaSynth, ArabFlutist & PadMeister.
  • Hugo Kant: Multi-sampled Balafon, Toy Piano, Nanga, Rhodes, and more.
  • Iamlamprey: Endure groundshaking synth bass.
  • Icebreaker Audio: Hum Organ, CZ Noize, Key-Clicks.
  • Igorski: Toy Piano.
  • Impact Soundworks: The 88E, Heritage Percussion, Super Audio Boy, Shreddage 3 Stratus and Percision FREE, and more.
  • Ivy Audio: Piano in 162, Clare Solo, Carpenter Trombone, Scott Drums.
  • Jakob Reinhardt: Crispy Clean Strat, US Dream Guitar, Spanish Thrift Store Guitar, and Mountain Mandolin.
  • Jon Meyer: Gentle vibes, Steinway grand piano, Kawai BS-30 felt piano, Ludwig drum kits, and more.
  • Jonathan Howe: Jonathans Glockenspiel.
  • Karanyi Sounds: Wavesynth EP Glow wavetable instrument and Vapor Keys Sakura lo-fi pads.
  • Kralc: Cling Film Frame Drums, Wooden Percussion, Soft Guitar Chords and Toaster Percussion.
  • Kontaktbanks: Various demo banks.
  • Les Productions Zvon: Chromatic Hits (demo), Sidekick Electronic Drum/percussion Kits (demo).
  • Michael Kingston: Ruffrider & Easyrider drums.
  • Mihai Sorohan: Vowel Ensemble Choir Pack.
  • Minimal Tonal: Piano and SUB instruments.
  • Mntra: Rasa with Tibetan Horn, Morin khuur, Pitched Volcanic Rocks, and “Viper” Death Whistle.
  • Modularsamples: Korg Z1, Ensoniq ESQ1, DSI Tetra and more.
  • Muletone Audio: Strashed, collection of high quality percussive sounds recorded from various methods of destroying a guitar.
  • Native Instruments: Kontakt Factory Selection.
  • Orange Tree Samples: JazzFunk Kit (direct download) / Slide Flute (direct download).
  • ourafilmes: Various (dnb type) instruments.
  • Past To Future Samples: Vintage drum kits & vocal samples. Also, exclusive 60s Motown Drums Vol 5 at Rekkerd.
  • Performance Samples: River Harp, Solo Violin Legato, Legacy Selection and Active-Bow Tech Demo.
  • Pettinhouse: Yamaha kit, Jazz Guitar, Vinyl Hammond, Garage Vinyl Full Kit, DirectGuitar 2.0 FREE, Brush kits, DirectBass FREE, Classic – Nylon Guitar….
  • Pianobook: A collection of community sourced sampled pianos.
  • PULSEHA: Toy upright piano and Syntaktion Basic monosynth.
  • PulseSetter Sounds: Metalstorm library for trailer composers and Reverxis reverse guitar sound design instruments.
  • Precisionsound: Peruvian Ocarina, Cretone TT, Koestler Rigoletto, Red Grand, ToysToysToys.
  • Premier Sound Factory: Wurly Premier G electric piano.
  • ProjectSAM: The Free Orchestra monthly cinematic instruments.
  • Rast Sound: Snow Bells, Vocal Morphs and taster packs.
  • Rattly And Raw: Bear Problems, Lockdown Kitchen, Zombie Drum Bits, The Hipster’s Bongos, The Simpler Sampler.
  • Red Room Audio: Snaps Claps Slaps Stomps & Shouts and Palette Primary Colors.
  • Replika Sound: Acoustic Guitar (Nylon String) & Steel String demo versions.
  • Resomonics: ChillerScapes spooky ambiences & drones for horror.
  • Retro Sampling: Electric DigiChrome Piano.
  • Rhim Samples: Stylophone Beatbox free, Dubsiren.
  • Rigid Audio: Drum One, Metawave and Ambiloops Bundle.
  • Riot Audio: Bionic Plucks and Mallets – Lite Edition and Tremolo Clouds.
  • Riverwood Air: RAW Power Metallic Percussion.
  • Rossignol Studio: Versophone, Barbariz 3, Orgambou, Orguerver, Harmonéon, Francinium, Sifflo, and Philorgue.
  • Sample Logic: Taste the Fury Taiko drum ensemble instrument.
  • Sample Modern: Detuned upright piano, future rise 25, keys for edm, minimal chords, and more.
  • Samplefino: Analogue Kick Drum generator for Kontakt.
  • SampleHero: Vintage Toy Tambourine.
  • Samplephonics: Ronroco, Leeds Town Hall Organ.
  • SampleScience: Analog Waveforms v2, The Bells, Taiko Drums, Singing Bowl Renaissance, Stylo Synthesis, Zither Renaissance, and many more.
  • Soni Musicae: Harpsichords, pipe organ, accordion, and more….
  • Sonic Cat: Cajon (free 4 velocity layer version) and Pop Piano Free.
  • Soniccouture: Hammersmith Free Model D Grand Piano, Thunder Drum, Music Boxes, Tape Choir.
  • Sonixinema: Christmas Bells, Contemporary Cello, Viola & Violin Freebies, Brute Flute Freebie, String Textures, Piano Textures, and Medicine Man.
  • Sonora Cinematic: Aria Libera cinematic granular vocals and Magnetica Redux cinematic soundscapes.
  • Sonuscore: Free HD Orchestra Chords & Sustained String Chords (newsletter signup), Enthic Flute Phrases, Phrases Compilation and Dhol Ensemble.
  • Soundethers: Freefall animated textures.
  • SoundFxWizard: Scrape Swhell horror swell geneartor.
  • Soundiron: Aquae Organ, Rainsong, Desk Bell, Snack The Cat.
  • Strayworx: Fujiya MC-3A and Ultranova SAW Bass.
  • Sound Blocker: Mikes iMoog (Moog Voyager).
  • Strezov Sampling: Creative ToolboX: Drums and Percussion, Diamond Jazz Trio, The Felt Seiler Free Edition, and more.
  • Strix Instruments: ZVENIGOROD Toy Piano.
  • SUN.io / Sudden Sound Studio: Jackson guitar, field recordings, 9 World Instruments.
  • Synth Magic: MiniMagic 002 & 003, Synare, Siel PX Electric Piano, Piano 73.
  • Taqsim: Middle Eastern instrument featuring accordion, rababa, shvi, tar, duduk, garmon, frula flute, kanun, ney, and more.
  • The Sample Company: Round Robin 808 R&D – Test Kit.
  • THEPHONOLOOP: Texture Mozaik.01 Demo (fully functional).
  • Tronsonic: Expressive Tron synth instrument.
  • VST Buzz: Soft Guitar Chords, Egyptian Darabuka, Wooden Percussion, Piano in 162, Shortnoise, Clare Solo, Jonathan’s Glockenspiel, and many more.
  • Wavesfactory: Whispers, Freelodica, Old Tape Drums, DrumCircle, Power Guitars, 1850 Pipe Organ, W-MusicBox, W-Clock.
  • Walid Feghali: Feroyn’s Flute beautiful legato recorder.
  • Westwood: Alt Piano Lite upright felt piano, and the Roots series.
  • Wrongtools: Spin music boxes library.
  • Xtant Audio: African Slit Drum.
  • Yarra Audio: P511 analog modular synthesizer instrument.
  • ZAK Sound: Morning Coffee Piano.

Not free, but you can also pick up some really cheap Kontakt libraries up at VST Buzz.