filtrr by blepfx: A Free Nonlinear Filter VST
filtrr by blepfx: A Free Nonlinear Filter VST Morph between low-pass, high-pass, band-pass and peak filtering while adding saturation, audio-rate modulation and creative movement. filtrr is a free nonlinear ladder filter plugin developed by blepfx. Released in 2025, it combines flexible frequency shaping, saturation and modulation inside a compact interface designed for fast creative processing. The plugin can operate as a conventional low-pass, high-pass or band-pass filter, but it can also move continuously between different filter shapes. This makes it possible to create transitions that would normally require several automated filters or a more complicated multi-effect chain. filtrr also…
Six Sines: A Free Six-Operator FM Synth Plugin
Six Sines: A Free Six-Operator FM Synth Plugin Deep phase modulation, digital ring modulation, CZ-style phase distortion, MPE control and extensive per-voice modulation. Six Sines is a free and open-source synthesizer developed by BaconPaul, a contributor to the Surge Synth Team. Originally released in January 2025, the instrument explores audio-rate interaction between six operators using phase modulation, frequency modulation and digital ring modulation. The overall concept recalls classic six-operator FM synthesizers, but Six Sines does not simply reproduce a fixed collection of Yamaha-style algorithms. Its modulation matrix allows each operator to generate audio, modulate itself through feedback or influence operators…
neo::synth: A Free Modular VST Instrument for Sound Design
neo::synth: A Free Modular VST Instrument for Sound Design Combine analog-style oscillators, 24 filters, spectral morphing, granular sampling and deep modulation inside one flexible synthesizer. neo::synth is a free modular polyphonic synthesizer designed for electronic music production, experimental composition and detailed sound design. The instrument provides 58 independent modules that can be combined inside a flexible signal architecture. Producers can build traditional subtractive synthesizers, FM patches, granular textures, vector sounds and more experimental configurations without being restricted to one fixed synthesis method. neo::synth is currently available free of charge for Windows and macOS. It includes 16-voice polyphony, 48 factory presets…
Little Drum Machine: A Free Drum VST for Fast Grooves
Little Drum Machine: A Free Drum VST for Fast Grooves Build complete beats with eight drum lanes, musical randomization, custom samples, polyrhythms, effects and a scene-based arranger. Little Drum Machine is a free drum instrument developed by Snorkel Audio for producers who want to build rhythms quickly without opening an oversized workstation. The plugin combines a classic 16-step sequencer with eight drum lanes, per-step velocity, 32 included samples, custom sample import, musical randomization and a complete scene-based arrangement system. It can operate as a self-contained drum machine or send MIDI to another drum synth, sampler or external instrument. This makes…
oXygen: A Free All-in-One Mastering Suite VST3
oXygen: A Free All-in-One Mastering Suite VST3 Corrective EQ, dynamic control, stereo imaging, reference matching and final loudness processing inside one open-source mastering rack. oXygen Mastering Suite is a free and open-source mastering plugin developed by Wamphyre. It combines the principal stages of a modern mastering chain inside one modular interface, including static EQ, dynamic EQ, multiband compression, stereo imaging, gain staging and final loudness processing. The plugin also provides two assisted workflows. Master Assistant listens to the incoming mix and proposes settings based on its tonal balance, dynamics, stereo image, loudness and peak behaviour. Reference Match compares the mix…
Proteus by GuitarML: A Free Neural Guitar Amp VST
Proteus by GuitarML: A Free Neural Guitar Amp VST Load, create and share neural captures of guitar amplifiers, preamps, overdrive pedals and complete recording rigs. Proteus is a free and open-source guitar amp and pedal capture plugin developed by GuitarML. It uses machine learning to reproduce the dynamic response of amplifiers, preamps, distortion pedals, overdrives and boosts inside a compatible DAW. The plugin can load ready-made models from the GuitarML ToneLibrary, but its most distinctive feature is the ability to create personal captures of real hardware or other audio plugins. Guitarists can model a single amplifier setting, capture the complete…
Galdr: A Free Dark Wavetable Synth for Heavy Sound Design
Galdr: A Free Dark Wavetable Synth for Heavy Sound Design Subtractive synthesis, wavetable morphing, FM, granular textures and cavernous effects inside one free open-source instrument. Galdr is a free and open-source synthesizer developed by Sognevo. Released in August 2026, the instrument combines subtractive synthesis, wavetable morphing, frequency modulation and granular textures inside a dark interface inspired by black metal imagery. Its name comes from an Old Norse term describing a spell that is sung rather than spoken. That concept fits the plugin well. Galdr can produce conventional basses, leads and pads, but its strongest personality appears when those sounds are…
bx_masterdesk Classic: A Free All-in-One Mastering VST
bx_masterdesk Classic: A Free All-in-One Mastering VST Compression, tonal balance, saturation, stereo enhancement and dynamic-range metering inside one streamlined mastering plugin. bx_masterdesk Classic is a free all-in-one mastering plugin developed by Brainworx and distributed by Plugin Alliance. It combines several processes normally found across a complete mastering chain inside a compact interface designed around three main controls. The plugin is intended for producers, musicians and mixing engineers who want to create polished, competitively loud masters without building a complicated chain of separate compressors, equalizers, saturators, stereo processors and limiters. bx_masterdesk Classic is included permanently with every free Plugin Alliance account.…
PLUSH by orph: A Free Exciter and Loudness VST
PLUSH by orph: A Free Exciter and Loudness VST Add controlled air, harmonic detail and perceived weight to individual tracks, buses and finished mixes. PLUSH is a free mixing and mastering plugin developed by German audio software company orph. It combines a high-frequency brilliance processor with a loudness and harmonic-density stage inside one compact interface. The plugin is designed as a finishing processor for the end of a channel, bus or mastering chain. It can add air to vocals, presence to drums, brightness to synthesizers and additional weight to a complete mix without requiring a long collection of separate exciters,…
