Category — 83 modules
A curated selection of high-quality, tested synthesizer instruments. Each entry is free to download and verified for stability, so you can find your next go-to synth without the guesswork.
Synthesizers
Cesium is an interesting freeware chorus by Green Oak Software, the same developer who created the Crystal synthesizer. CH4D by Jovan Koncar (discontinued) was an interesting four-voice chorus effect…
Synthesizers
DC1A by Klanghelm is the free compressor I open more often than any other dynamics tool in my collection. Two knobs handle everything, and that’s why I love using it.
Synthesizers
TDR Molotok is Tokyo Dawn Records’ modernized take on the original Molot, released in 2020 alongside the paid TDR Molot GE. The DNA is the same (aggressive character compression with a distinct…
Synthesizers
OTT by Xfer Records is the multiband compression standard for EDM, future bass, hyperpop, and anything else that needs to sound dense and louder than it has any right to. It’s a three-band compressor…
Synthesizers
NastyDLA mkIII by Variety of Sound is the latest version of one of the most respected freeware delay plugins. The original NastyDLA appeared over a decade ago, and the concept has remained the same:…
Synthesizers
by Audio Damage
FuzzPlus 3 is a free distortion plugin by Audio Damage. It’s not often that the developer’s name and the plugin name coincide perfectly, but that’s the case here.
Synthesizers
TAL-Filter-2 is a free filter plugin with extensive modulation capabilities, available in AU, VST, VST3, and AAX formats for macOS, Windows, and Linux. Togu Audio Line borrowed several filter types…
Synthesizers
Granular synthesis is one of the more interesting tools in music production. We picked the best free granular VST plugins for your DAW.
Synthesizers
If you produce rock, metal, or pop music, SSD Free is probably the first free drum plugin you’ll hear about. Steven Slate Drums has been an industry name for years, and the free edition lives up to…
Synthesizers
Organic Calfskin Kit is a plugin that really surprised me. It sounds a lot better than it looks.
Synthesizers
Monster Drum covers more genres than any other free drum plugin I’ve seen. Version 3 includes 88 kits across 20 genres: pop, rock, metal, punk, electronic, hip-hop, R&B, synthwave, reggae, jazz,…
Synthesizers
Jamstix does something no other plugin on this list does. Instead of triggering static samples or MIDI loops, it uses AI algorithms to generate drum parts that respond dynamically to your playing.
Synthesizers
If you’re on Linux, Drumgizmo is probably the best free drum plugin you’ll find. It’s open-source, supports LV2, and offers multichannel output with mic-bleed simulation, which is the closest free…
Synthesizers
Yes, I’m excited about the snare drum. That’s the best type of drum! On a more serious note, EXC!TE SNARE DRUM is a niche plugin.
Synthesizers
Sitala is my drum sampler of choice. It’s lightweight, simple, and has all the controls you’re actually likely to use (unless you’re sampling your handmade cello or something weird like that).
Synthesizers
Speedrum Lite is another top choice among freeware drum samplers. Compared to Sitala, Speedrum Lite offers more control over the Attack and Decay of each sample, dedicated low-pass and high-pass…
Synthesizers
DrumNet is pretty helpful if you’re starting a new song and need a quick groove to build on. It’s an 8-slot drum sampler that uses AI to generate drum sounds, so you can build entire kits from…
Synthesizers
99Sounds built Drumplayer in collaboration with SampleScience, and it’s one of the few free drum machines with multi-out routing. It includes 20 kits with 14 sounds each, covering hip-hop,…
Synthesizers
by Ample Sound
I reach for Ample Guitar M Lite II whenever I need to sketch an acoustic guitar part with MIDI. It’s the free version of Ample Sound’s Martin D-41 sampled acoustic, and nothing else in the freeware…
Synthesizers
I love layering odd-sounding instruments in my music, and Somerville Sounds’ Rubber Bridge Plucks is one of my secret weapons for roughing up a guitar mix. It’s a parlor acoustic modified with a…
Synthesizers
Every other plugin on this list is sample-based. Spicy Guitar is the exception — it’s physically modeled.
Synthesizers
Most guitar libraries treat harmonics as an afterthought articulation buried in a key switch. Guitar Harmonics Essential, a free library for Steinberg’s HALion Sonic 7, builds an entire instrument…
Synthesizers
Quick heads-up on LABS Electric Guitars: Spitfire Audio was acquired by Splice in 2025, and as of October that year, the entire LABS library moved into Splice INSTRUMENT, a new free plugin built…
Synthesizers
Spitfire Audio co-founder Christian Henson sampled Peel Guitar back in 2006 using a Fender Telecaster through a 15-watt vintage tweed amp with a touch of vibrato, tremolo, and distortion. The tone is…
Synthesizers
Quiet Music built Solaris GTR Lite from samples of an Ibanez AS73G-RGF semi-hollow electric guitar, recorded through a chain of guitar pedals. That pedal chain is the reason Solaris GTR Lite has more…
Synthesizers
Zak Sound’s Sapphire Guitar layers acoustic and electric guitar samples with lush pads and textures to produce an ambient hybrid instrument. Five texture layers can be balanced independently, and…
Synthesizers
Decent Sampler is the first one I would install because the free library ecosystem is so active. The plugin plays instruments in the Decent Sampler format (.
Synthesizers
Splice INSTRUMENT is the new home of Spitfire Audio’s LABS sounds. LABS was one of the most useful free instrument collections for cinematic, ambient, lo-fi, and experimental music, and the newer…
Synthesizers
Orchestral Tools SINE Player is the pick here if your main goal is orchestral and cinematic scoring. SINE Player is Orchestral Tools’ free sample player, and it runs the company’s own libraries…
Synthesizers
sforzando by Plogue is the free sample player to choose if you care about open formats. It plays SFZ instruments, which are plain-text mappings that describe how a folder of samples should behave.
Synthesizers
SampleTank 4 CS is the most self-contained workstation on this list. The free Custom Shop edition includes 50 instruments, over 4 GB of sound content, and 200 MIDI loops.
Synthesizers
Kontakt Factory Selection 2 is the default starter library for anyone installing Kontakt 8 Player for the first time. It’s the updated replacement for the original Kontakt Factory Selection that…
Synthesizers
Released in late 2022 as part of Komplete Start, Hypha has quietly become one of my most-used free NI instruments for layering. It’s an acoustic-electric hybrid instrument with 156 presets spread…
Synthesizers
Analog Dreams is Native Instruments’ streamlined Play Series instrument for 70s and 80s synth sounds. The Komplete Start version is usable but smaller than the paid standalone.
Synthesizers
Where Analog Dreams leans toward synthetic,Ethereal Earth leans toward acoustic and world-fusion. It’s built around processed world instruments (swarmed sitars, synthesized gongs, ethnic bowed…
Synthesizers
Sonokinetic EMP Mark II is a sampled Rhodes Mark II electric piano that runs in Kontakt 7 Player. If you’re looking for a good-sounding free electric piano and don’t want the hassle of installing a…
Synthesizers
Strezov released Creative ToolboX: Steinway Grand Piano in 2023 as the second part of its 10th-anniversary free-library series. It samples a Steinway B-211 grand in a cinematic hall with three…
Synthesizers
Audio Imperia GLADE is the flagship free Kontakt library of the 2025–2026 cycle, and the one I’d install first if I had to pick only one off this entire list. Released in November 2025, GLADE bundles…
Synthesizers
The Free Orchestra from ProjectSAM is now in its second volume, and both v1 and v2 install together from the same download page. The combined set gives you more than 20 Kontakt Player patches drawn…
Synthesizers
Sonuscore released LUX Orchestral Strings Elements in April 2026, and it’s one of my favorite free string libraries to land in years. LUX Elements uses the same 70-piece symphonic string recordings…
Synthesizers
Diamond Jazz Trio is a stripped-down free version of Strezov’s paid Diamond Jazz Orchestra library. You get piano, double bass, and two alto sax patches in a small Kontakt Player download.
Synthesizers
Emergence Audio Infinite Collection bundles 10 instruments drawn from Emergence’s paid Infinite Motion series. The sources cover evolving upright piano, cello, violin, double bass, and clarinet, all…
Synthesizers
AVA PRISM Drums Lite Edition is one drum instrument with six production-ready kits inside it: Modern Pop, Retro Pop, Trailer, Indie Pop, Hip-Hop, and Lo-Fi. The samples are mixed to sit in a modern…
Synthesizers
Keepforest Ferrum Free Edition is the freeware version of Keepforest’s modern trailer percussion library. The free edition includes 42 sounds from the full Ferrum library: impacts, hits, punches,…
Synthesizers
Strezov Thunder X3M Taiko Freebie is a subset of Strezov’s full Thunder X3M epic percussion library, focused on taiko drums. You get Taiko Low, Taiko Mid, and Taiko Rim (with Rimshots), sampled with…
Synthesizers
Jacob Collier Audience Choir is the result of a partnership between Native Instruments and Jacob Collier during his 2024 Djesse world tour. Over 22 concerts, NI recorded live audiences singing…
Synthesizers
Soniccouture Tape Choir is a faithful recreation of the most famous multi-tracked vocal pad in pop history, the choir on 10cc’s “I’m Not In Love.
Synthesizers
Sonokinetic Carousel is a sampled fairground organ, and it’s been free since December 2020. Sonokinetic remastered the library in 2020 from their original 2016 project, sampling 10 fairground organ…
Synthesizers
Another niche Sonokinetic freebie, Hurdy Gurdy is a sampled Dutch-built DRAAILIER hurdy-gurdy. The instrument covers drone strings, melody strings, and the buzzing chien (the signature rhythmic buzz…
Synthesizers
Embertone Arcane is the most unusual free library on this list because you have to solve puzzles to unlock the sounds. It’s structured as a small adventure game inside Kontakt Player.
Synthesizers
Released in March 2023, Cinesamples Mister Rogers’ Celeste samples the actual celeste from Mister Rogers’ Neighborhood, the one used for the iconic “Trolley” theme. The sound is immediately…
Synthesizers
LUX Orchestral Strings Elements is the newest free library on this list. Sonuscore released it on April 9, 2026, as the free teaser version of their $499 LUX Orchestral Strings library.
Synthesizers
The Free Orchestra 2 by ProjectSAM is the cinematic tool I pull up when I need something quick and lightweight for a trailer-style texture. It’s a free Kontakt Player library with 12 curated…
Synthesizers
Synful Orchestra is a pretty strange orchestral plugin, but in a good way. Created by Dr.
Synthesizers
VSCO 2 Community Edition by Versilian Studios is an open-source chamber orchestra under the CC0 license, which means it’s public domain. What I love here is that there’s no signup email, no account,…
Synthesizers
Soundpaint is a free sample engine developed by Troels Folmann, one of the founders of 8Dio. The engine renders up to 127 dynamic velocity layers in real time, which gives the sounds a continuous,…
Synthesizers
Decent Sampler is a free, cross-platform sample player plugin created by David Hilowitz. It’s available for Windows, macOS, and iOS, and runs in VST, VST3, AU, and AUv3.
Synthesizers
LABS by Spitfire Audio launched in 2016 as a free instrument series. The situation got complicated in October 2025 when Splice acquired Spitfire Audio, and the LABS catalog migrated into a new free…
Synthesizers
Virtual Playing Orchestra is an SFZ-based free orchestral library maintained by Paul Battersby. It’s a curated compilation of samples from Sonatina Symphonic Orchestra, VSCO 2 Community Edition, and…
Synthesizers
by MeldaProduction
Rating: 9.
Synthesizers
Rating: 8.
Synthesizers
by Orchestral Tools
Rating: 8.
Synthesizers
by Ivy Audio
Rating: 8.
Synthesizers
by Sound Magic
Best CPU-Light Piano · 8.
Synthesizers
by 99Sounds
Best for Lo-Fi and Hip-Hop · 7.
Synthesizers
Today’s edition of bpb Freeware Studio features the best free sound module VST/AU plugins for Windows and Mac. Sound modules (also known as romplers) can be pretty useful tools, especially if they…
Synthesizers
This article features free sampler VST plugins. For more categories, return to Free VST Plugins.
Synthesizers
The good old SoundFont format is definitely becoming a thing of the past. But still, I’m sure that most of us have a couple of favorite SF2s stashed in a safe place somewhere on the Hard Drive.
Synthesizers
In this edition of bpb Freeware Studio, we’ll be covering the best free string machine VST/AU plugins for Windows and Mac OS. String machines (otherwise known as string ensemble synthesizers) were…
Synthesizers
by Matt Tytel
Vital Basic is the freeware version of Matt Tytel’s wavetable synthesizer Vital. Feature-wise, the free synth is just as powerful as the paid editions.
Synthesizers
by Togu Audio Line
I always come back to TAL-NoiseMaker when I need a versatile VA synth that doesn’t take up much screen space or CPU. It has dual oscillators, a multi-mode filter, two LFO modules, and a set of…
Synthesizers
by Blaukraut Engineering
Simplicity goes a long way. In the world of free synths, Charlatan is the very definition of simplicity.
Synthesizers
by Audible Genius
Primer is a free virtual synthesizer available for macOS, Windows, and iPad in AU, VST, and VST3 formats. It integrates with the Syntorial learning platform, but you can use it for free even if you…
Synthesizers
by u-he
Zebralette is a freeware synthesizer built around a single oscillator from u-he’s flagship Zebra synthesizer. Don’t let the “single oscillator” part fool you.
Synthesizers
by Digital Suburban
The best free FM synthesizer right now is Dexed. It accurately emulates the most famous FM keyboard ever made, the Yamaha DX7.
Synthesizers
by Sonicbits
Another FM synthesizer worth checking out is Exakt Lite by Sonicbits. Unlike Dexed, which faithfully recreates the DX7, Exakt Lite does its own thing.
Synthesizers
by Full Bucket Music
ModulAir is a modular virtual synthesizer with 31 modules and up to eighteen modules per patch. Unlike VCV Rack, it doesn’t support third-party modules.
Synthesizers
by discoDSP
OB-Xd emulates the Oberheim OB-X, OB-Xa, and OB-8 analog synthesizers with intentional differences and improvements. The sound isn’t a 100% accurate simulation of the original hardware, but OB-Xd…
Synthesizers
by Green Oak
Green Oak’s Crystal has been around for a very long time, and its interface shows its age. But the synthesis engine underneath is still worth exploring.
Synthesizers
We covered the best free synthesizer plugins in a recent article. But what are the best free retro synthesizers? Find out in the list below and return to free VST plugins for more software.
Synthesizers
Komplete Start is Native Instruments’ free bundle: over 2,000 sounds, 16 instruments, and several effects. It includes the Kontakt Player, Reaktor Player, and Massive X Player, plus sampled pianos,…
Synthesizers
Matt Tytel has released Vital, a freeware spectral warping wavetable synthesizer in VST, VST3, AU, and LV2 plugin formats for digital audio workstations on Windows, macOS, and Linux. Vital was…
Synthesizers
Open-Source classic Surge has been updated to Surge XT 1.