SmartAmp
GuitarML
SmartAmp is an open-source amplifier-modeling plug-in associated with machine-learning-based capture techniques.
View details →THE AUDIO MAGAZINE / RESOURCES
Audio Units (AU) – Free Music Software & Plug-ins
Find permanently free recording tools, instruments, effects and audio utilities for desktop, mobile and the browser. Each listing explains its purpose, compatibility and important free-edition restrictions, with links to the official source.
These are researched directory entries, not hands-on reviews. Optional purchases, account requirements and limited editions are identified on product pages. Format availability can differ by operating system.
201 listings
SonoBus
SonoBus Contributors
SonoBus shares live audio between participants over a network, with controls for connection and audio-quality tradeoffs.
View details →Soundmagic Spectral
Michael Norris
Soundmagic Spectral is a collection of Audio Unit effects for transforming audio in the spectral domain.
View details →SPARTA
Aalto University Acoustics Lab
SPARTA is a collection of spatial-audio plug-ins based on research-oriented signal-processing tools.
View details →Surge XT
Surge Synth Team
Surge XT is a hybrid synthesizer with multiple oscillator models, extensive modulation and integrated effects.
View details →Surge XT Effects
Surge Synth Team
Surge XT Effects makes the project's effect algorithms available for processing other audio.
View details →SyndtSphere
Klevgrand
SyndtSphere is a synthesizer organized around a spatial preset-browsing interface.
View details →Tape Cassette 2
Caelum Audio
Tape Cassette 2 adds cassette-inspired saturation and instability to recorded audio.
View details →Tape Echo 2
Dusk Audio
Tape Echo 2 models a three-head tape-delay system with a spring-reverb path.
View details →Tattoo (legacy)
Audio Damage
Tattoo is a legacy synthesized drum machine with a dedicated rhythm-oriented workflow.
View details →TDR Kotelnikov
Tokyo Dawn Labs
TDR Kotelnikov is a wideband dynamics processor designed for controlled compression in demanding mix and mastering work.
View details →TDR Molotok
Tokyo Dawn Labs
TDR Molotok is a character-oriented compressor with a range of dynamics behaviors.
View details →TDR Nova
Tokyo Dawn Labs
TDR Nova combines parametric equalization with frequency-dependent dynamics.
View details →TDR Prism
Tokyo Dawn Labs
TDR Prism is a spectrum analyzer designed to make frequency balance easier to inspect during production.
View details →TDR VOS SlickEQ
Tokyo Dawn Labs
TDR VOS SlickEQ is a tone-shaping equalizer with selectable response characters and an interface built around broad musical decisions.
View details →TENS jr.
Klanghelm
TENS jr.
View details →The Anvil
Ignite Amps
The Anvil is a multi-channel guitar preamplifier simulator.
View details →The Deputy Mark II
Full Bucket Music
The Deputy Mark II is a string-synthesizer-style instrument for ensemble textures and related keyboard sounds.
View details →The scrooo
Full Bucket Music
The scrooo uses spectral and formant-oriented synthesis to create sounds with vocal-like or resonant characteristics.
View details →ToneBoosters Legacy v3 Bundle
ToneBoosters
ToneBoosters' legacy collection makes older processing tools available separately from its current commercial range.
View details →TONEX 2 CS
IK Multimedia
TONEX 2 CS is the permanent free entry into IK Multimedia’s tone-modeling ecosystem.
View details →TPA-1
Ignite Amps
TPA-1 models a tube power-amplifier stage for guitar processing.
View details →Triple Cheese
u-he
Triple Cheese uses comb-filter-based synthesis to build sounds with resonant and sometimes unusual harmonic structures.
View details →TS-999
Ignite Amps
TS-999 is an overdrive-pedal simulation for guitar-oriented signal chains.
View details →Availability, licensing and system requirements can change. Verification refers to official documentation and download availability, not installation or hands-on testing. Check the developer's current terms before installing.