Freeware - Tempest Sona Chroma Kontakt Instrument

https://tempest.audio/sonachroma/

Tempest Instruments introduces Sona/Chroma, a new kind of orchestral instrument blending. Perfect for creators seeking new sonic dimensions, Sona/Chroma empowers users to seamlessly merge 16 orchestral instruments and their groups, delivering an infinite array of unique timbres. What makes Sona/Chroma truly extraordinary is its innovative fusion of sound and color. Each instrument's tonal character is matched to a specific hue, allowing you to see the music as you create it. Woodwinds are represented by shades of blue and green, brass glows with yellow and orange, and strings transition from red to purple. As instruments blend, their colors mix dynamically, producing one-of-a-kind visual and auditory experiences—a creative playground for the senses.

Freeware - e-instruments Desolate Guitars Fragment Kontakt Instrument

https://e-instruments.com/instruments/fragment/desolate-guitars-fragment/

Get the signature sound that has shaped decades of music, full of character and emotion - FREE. Desolate Guitars Fragment presents a carefully curated guitar tone, sourced from the acclaimed full Desolate Guitars instrument. Explore this inspiring instrument with its iconic guitar tone, two legendary amps, authentic spring reverb and versatile FX macro control.

Freeware - Splash Sound Kalimba Kontakt and VSTi Plugin

https://evainstruments.com/products/kalimba/

This is the second instrument in our ever-growing Play Collection, a series of simple, expressive instruments available completely free. Kalimba is an African kalimba instrument, built on deep sampling and delivering a clean, authentic sound right out of the box. Whether you are making cinematic, lo-fi, ambient, or ethnic music, it will fit naturally into your tracks, adding a soft, organic character.

Freeware - Sonixinema ScoreHub Kontakt Instruments

https://www.sonixinema.com/pages/scorehub

A free series of sample instruments for Kontakt Player, designed to spark new ideas. 

Freeware - Fracture Sounds Blueprint Collection Kontakt Instrument Libraries

 https://fracturesounds.com/product-category/free/

A large and growing assortment of high quality Kontakt instruments.

Works with Kontakt Player.

Freeware - New York S&S Model B Piano Kontakt Instrument

https://www.pianobook.co.uk/packs/the-experience-new-york-ss-model-b/

The Experience – New York S&S Model B 

Steinway's famous semi concert grand with Performance and VR/Ambisonic perspectives - now with sympathetic resonance modeling

Freeware - Impact Soundworks Tokyo Scoring Strings Free Kontakt Instrument

https://impactsoundworks.com/product/tokyo-scoring-strings-free/

This free version of our flagship orchestral strings library includes two instrument sections (Violins I and Cellos) with the signature legato and user-friendly workflow of the Tokyo Scoring Strings engine and the beautiful, agile performance of Japan’s top string ensemble, Koichiro Muroya Strings. 

Kontakt Player compatible, and utterly risk-free. See for yourself just how easy it can be to write beautiful, realistic string performances with Tokyo Scoring Strings!

Freeware - Insanity Samples Bamboo Flute Kontakt Instrument Library

https://insanitysamples.com/products/bamboo-flute-expressive-world-flute

BAMBOO FLUTE - Expressive World Flute is a deeply characterful and performance led solo flute instrument, with an exotic and worldly vibe running through every note. A free instrument designed to offer an introduction to the Insanity Samples ecosystem, and how our libraries function. With all the bells and whistles found on our flagship libraries. From the powerful and unique ‘Overlay Threshold’ functionality, to beautiful adaptive true legatos. Whilst the core, expected articulations are of course on offer, it wouldn’t be an Insanity Samples creation without a series of extended and special performance techniques. From ornamental and turn phrasing, to flutter tonging and experimental overblowing techniques. This flute will inject deep character into your writing, and inspire your creativity right out of the box. 

 Important Note: BAMBOO FLUTE requires the FULL version of Kontakt 5/6/7 or above. Downloading this with only the free 'Kontakt Player' will limit its use to 15 minutes per load.

Freeware - Indiginus Real Rotor Organ Kontakt Instrument Library

https://www.indiginus.com/real-rotor-organ

We sampled the sound of a 1957 Hammond B3™ through a spinning Leslie™ speaker at chorale speed, using a single drawbar setting popular in Rock, Prog, and Jazz.

Full Kontakt required.

Freeware - Ink Harmonica Kontakt Instrument Library

https://ink-audio.com/collections/ink-matchbook/products/ink-harmonica

Ink Harmonica is a free harmonica chord library for Kontakt. It’s inspired by the sound of singer songwriters playing a harmonica in a neck holder. It’s messy, loose and human.

Full Kontakt required.

Freeware - Ivy Audio Piano in 162 Kontakt Instrument Library

https://ivyaudio.com/Piano-in-162

Piano in 162 is a sample library of a Steinway Model B grand piano, available in Kontakt, SFZ, and Korg Kronos formats.

Requires full Kontakt.

Freeware - Sonuscore The Orchestra Elements Kontakt Instrument Library

https://www.sonuscore.com/shop/the-orchestra-elements/

The Free Version of Our Powerful Scoring Tool 

Experience the essence of THE ORCHESTRA, trusted by top composers for film, TV, and games, now available for free with THE ORCHESTRA ELEMENTS. 

THE ORCHESTRA ELEMENTS is your free fast track to orchestral composing. It comes with a carefully selected curation of instruments from THE ORCHESTRA and is powered by our groundbreaking ensemble-engine. Beginners take your very first orchestral steps and create amazing music in no time! 

Immediately playable. Incredibly inspiring. Surprisingly simple. Features 30 Inspirational Presets.

Works with Kontakt Player 6+

Freeware - Westwood Instruments ROOTS Kontakt Instrument Libraries

https://www.westwoodinstruments.com/roots/

Works with Kontakt Player!

Untold Strings Strings transfigured into a mesmerising wall of sound. For any story; real, imaginary or that blurry place between the two. Made from the violas in our award-winning library, Novella Origin

New libraries include Drifting Winds and Dust Piano!

Freeware - SoundProps Free Series LT Kontakt Instrument Library

https://soundprops.com/lt_mellotron/

https://soundprops.com/lt_d-bass/

SoundProps – LT Mellotron is a free library for NI Kontakt, offering a collection of of vintage tape-based mellotron sounds. From haunting flutes to lush strings and ethereal choirs, “SoundProps – LT Mellotron” provides a rich palette of tones to enhance your music production. Unlock the magic of the mellotron with “SoundProps – LT Mellotron.”

Requires full Kontakt.

SoundProps – LT – D Bass is a free NI Kontakt library offering the timeless charm of an old double bass. Dive into the rich, resonant tones of this classic instrument, perfect for adding depth and warmth to your compositions. Whether you’re crafting jazz melodies, orchestral arrangements, or folk tunes, “SoundProps – LT – D Bass” delivers authentic sound and character. Elevate your music with the organic beauty of this beloved instrument.

Freeware - Audiobro Silver Kontakt Instrument Library

https://audiobro.com/SILVER/

SILVER is a free, creative, growing collection of sounds. It started off as a deeply-sampled tongue drum, but we kept adding more and more diverse sounds to the library until we could create entire tracks with just this free tool. Listen to the demos for a few examples of what is possible. SILVER is SIMPLE, DIVERSE, and FUN! It’s quick to load and packed with presets to get you started. It runs inside the free Kontakt Player and is NKS-compatible.

Freeware - Jacob Collier Audience Choir Kontakt Instrument

https://www.native-instruments.com/en/products/komplete/vocal/jacob-collier-audience-choir/

Musician, singer-songwriter, and multi-instrumentalist Jacob Collier is renowned for his genre-defying productions, electrifying live shows, and innovative approach to harmony. Throughout his Djesse world tour, he captivated audiences by transforming them into harmonious choirs. Now these voices are yours to conduct with this one-of-a-kind choir plugin. The best part? It’s totally free to download.

Freeware - Soundiron Aquae Organ Kontakt Instrument Library

https://soundiron.com/products/aquae-organ

Welcome to Aquae Organ: our Alpha and Omega pipe organs performed in unison, recorded with hydrophones in tall crystal vases. Kontakt Player.

Freeware - The Love Piano Kontakt Instrument

https://vstbuzz.com/special/the-love-piano-kontakt-player-freebie/

The “LO.VE. Piano” is not “just another piano sample library“. This is something special – a piano that’s been created specifically for soft and intimate playing. Rather than creating a huge dynamic range, we focused solely on the lighter side of the piano. And when we say we focused, we mean it! We recorded 12 velocity layers between the soft to moderately loud dynamic range (no loud or “fff” dynamics here!) and also included hammer sounds pedal sounds (both of which can be added/removed) to give it even more persona. The library comes with 18 reverb IR, all chosen specifically to offer the most beautiful and lush sounds. This piano sounds beautiful, rich and intimate, while retaining its clarity and character, even at low velocities, making it perfect for film/TV/underscore/drama and so much more. The LO.VE Piano is completely free and compatible with Native Instruments Kontakt Player.

Freeware - Splash Sounds Vibraphone Kontakt Instrument

https://splashsound.org/vibraphone.html

Made for KONTAKT Full 5.6.8 or higher (not compatible with free KONTAKT PLAYER)

Freeware - ConvertWithMoss

https://github.com/git-moss/ConvertWithMoss

Converts multisamples in a specific source format to a different destination format. Furthermore, it can create multisample files from plain WAV files. The conversion process reads and writes metadata (name, category, creator, description and keywords) if supported by the format. If the source format does not support the information a guessing algorithm is applied to the name. Furthermore, samples can be grouped into groups and key ranges. Each sample can have 1 or no loop and parameters for pitch and different playback parameters.