Made for Cockos Reaper • Also as VST3 and CLAP for any DAW, and as web plugins in orOS Studio
EEL2 Scripting • Native Sliders • GFX Interfaces • VST3 & CLAP • Web Plugins • Zero Dependencies • CPU Efficient • Free & Open Source
Download
v2.5 • Released: 18/10/26
Try the effects on orOS StudioThe effects in your browser, with their own interfaces. Nothing to install.

Free forever. Every released plugin stays free and open source (MIT): no paywalls, license keys or nags. Become a monthly supporter or book a service (FX chains, preset packs, custom effects).

Plugins

  1. Get NULL JSFX HubFree for Windows, macOS and Linux, from the Download button.
  2. Pick what you wantPlugins one by one or all of them, as JSFX for REAPER or VST3 and CLAP for any DAW. The Hub installs and updates them.
  3. Open your DAWRescan the plugins. REAPER lists them under JS: NULL; other DAWs under the maker NULL JSFX.
INSTALL BY HAND
1

Install Effects

Easiest: NULL JSFX Hub from the Download button installs, updates and removes the plugins in the formats you pick, with the FX chains, presets and extras, and tells you when a new version is out. The installer does a one-off install of the same. Both use the folders below. To do it by hand:

Download JSFX for REAPER and extract the null_jsfx folder to your Reaper Effects directory:

Windows
C:/Users/[Username]/AppData/Roaming/REAPER/Effects/
macOS
~/Library/Application Support/REAPER/Effects/
Linux
~/.config/REAPER/Effects/

Restart Reaper or re-scan your plugins folders. NULL JSFX will be available under the JS category in the FX browser. Keep the gfx folder inside it: it holds the GFX versions (NULL <Name> GFX) and the file that draws their interface.

Presets: copy the files in the presets folder of the download (js-null_jsfx_*.ini) to the presets folder next to Effects (e.g. ~/.config/REAPER/presets/), then pick them from the preset menu at the top of the FX window. If a file with the same name is already there, it holds presets you saved yourself: keep it.

+

VST3 and CLAP (any DAW)

Plugins marked VST3 and CLAP also come as regular plugins. Download VST3 & CLAP for your system and copy the NULL JSFX folders from its VST3 and CLAP folders to:

Windows
C:/Program Files/Common Files/VST3/ and C:/Program Files/Common Files/CLAP/
macOS
~/Library/Audio/Plug-Ins/VST3/ and ~/Library/Audio/Plug-Ins/CLAP/
Linux
~/.vst3/ and ~/.clap/

Rescan plugins in your DAW. They appear under their own names (e.g. Tilt) with NULL JSFX as the maker.

2

Load Plugins

  1. Click the FX button on any track
  2. Open the FX Browser (if not visible)
  3. Navigate to the JS category
  4. Find plugins under JS: NULL JSFX folder
  5. Select any plugin to load it
💡 Tip: To see all plugins organized in the FX explorer, filter by searching "NULL" or create a Smart Folder: Menu "View" → FX Browser → right-click on "Folders" → "Add folder" → "Smart folder" → Filter contains "NULL". They will auto-categorize!
🎤 Shortcut: Press / to quickly focus the plugin search bar. ESC closes all modals.

One Slider 21

One control, instant result. Turn it up until it sounds right.

BRIGHTER

One-Knob Treble Lift

JSFXGFXVST3CLAP
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CHORUS ONE

One-Knob Stereo Chorus

JSFXGFXVST3CLAP
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CRUNCH

One-Knob Hard Distortion

JSFXGFXVST3CLAP
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DJ FILTER

One-Knob DJ Sweep Filter

JSFXGFXVST3CLAP
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DOUBLER

Automatic Double Tracking

JSFXGFXVST3CLAP
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DRIVER

One-Knob Warm Tube Drive

JSFXGFXVST3CLAP
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EXCITER

Harmonic High Enhancer

JSFXGFXVST3CLAP
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GRIT

One-Knob Bitcrusher

JSFXGFXVST3CLAP
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LOUDER

One-Knob Loudness Maximizer

JSFXGFXVST3CLAP
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MONO MAKER

Low-End Mono Summing

JSFXGFXVST3CLAP
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PHATTER

One-Knob Low-End Boost

JSFXGFXVST3CLAP
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PRESSURE

One-Knob Bus Compressor

JSFXGFXVST3CLAP
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PUMPER

Tempo-Synced Volume Pump

JSFXGFXVST3CLAP
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RISER

One-Knob Build-Up

JSFXGFXVST3CLAP
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SNAPPY

One-Knob Transient Shaper

JSFXGFXVST3CLAP
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SPREAD

Mono-Safe Stereo Widener

JSFXGFXVST3CLAP
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STRETCH

Granular Pitch Stretch

JSFXGFXVST3CLAP
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SWEEPER

DJ Filter Sweep

JSFXGFXVST3CLAP
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TILT

One-Knob Tilt EQ

JSFXGFXVST3CLAP
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WETTER

One-Knob Room Reverb

JSFXGFXVST3CLAP
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Essentials 45

The everyday mixing and mastering toolbox.

AUTO PAN

LFO Stereo Panner

JSFXGFXVST3CLAP
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CHORUS

Classic Delay Chorus

JSFXGFXVST3CLAP
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CLICK REPAIR

Click & Pop Removal

JSFXGFXVST3CLAP
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CLIPPER

Oversampled Hard & Soft Clipper

JSFXGFXVST3CLAP
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DE-HUM

Mains Hum Notch Remover

JSFXGFXVST3CLAP
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P

DE-PLOSIVE

Plosive & Pop Remover for Vocals

JSFXGFXVST3CLAP
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S

DEESSER

Split-Band Sibilance Control

JSFXGFXVST3CLAP
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L R

DELAY

Stereo & Ping-Pong Echo

JSFXGFXVST3CLAP
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DISPERSER

All-Pass Phase Dispersion

JSFXGFXVST3CLAP
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DRAW EQ

EQ You Draw with Ten Points

JSFXGFXVST3CLAP
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DYNAMIC EQ

Four-Band Dynamic EQ

JSFXGFXVST3CLAP
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DYNAMICS

Compressor & Expander

JSFXGFXVST3CLAP
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FILTER

Resonant Multi-Mode Filter

JSFXGFXVST3CLAP
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FLANGER

Jet Sweep Flanger

JSFXGFXVST3CLAP
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GATE

Noise Gate with Sidechain HPF

JSFXGFXVST3CLAP
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LIMITER

Limiter, Clipper & Brickwall

JSFXGFXVST3CLAP
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MAXIMIZER

Look-Ahead Loudness Maximizer

JSFXGFXVST3CLAP
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OCTAVER

Analog Octave Divider

JSFXGFXVST3CLAP
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PANNER

Natural Stereo Placement

JSFXGFXVST3CLAP
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PARAMETRIC EQ

Five-Band Parametric EQ

JSFXGFXVST3CLAP
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PHASE ALIGN

Time, Polarity and Phase Alignment

JSFXGFXVST3CLAP
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PHASER

All-Pass Sweep Phaser

JSFXGFXVST3CLAP
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REVERB

Compact Stereo Algorithmic Reverb

JSFXGFXVST3CLAP
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RING MOD

Swept Ring Modulator

JSFXGFXVST3CLAP
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SATURATION

Seven-Mode Saturation

JSFXGFXVST3CLAP
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SHAPER

Waveshaper with a Drawable Curve

JSFXGFXVST3CLAP
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TAPE

Analog Tape Machine

JSFXGFXVST3CLAP
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TAPE ECHO

Multi-Head Tape Echo with Spring

JSFXGFXVST3CLAP
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TREMOLO

Sine LFO Tremolo

JSFXGFXVST3CLAP
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VIBRATO

Delay-Line Pitch Vibrato

JSFXGFXVST3CLAP
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VOLUME SHAPER

Tempo-Synced Volume Envelope

JSFXGFXVST3CLAP
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WAH

Wah Pedal, Auto-Wah & LFO Wah

JSFXGFXVST3CLAP
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Advanced 33

Deeper sound design, creative effects and special processing.

AMP SIMULATOR

Guitar & Bass Amp, No Cabinet

JSFXGFXVST3CLAP
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COMB FILTER

Resonant Delay Comb

JSFXGFXVST3CLAP
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CONVOLUTION

Impulse Response Reverb

JSFXGFXVST3CLAP
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AEIOU

FORMANT FILTER

Vowel Formant Filter

JSFXGFXVST3CLAP
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GLITCH FX

Stutter & Glitch Engine

JSFXGFXVST3CLAP
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HALF SPEED

Real-Time Halftime & Slow-Down

JSFXGFXVST3CLAP
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HARMONIZER

Two-Voice Pitch Harmonizer

JSFXGFXVST3CLAP
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KICK SHAPER

Kick Drum Sculptor

JSFXGFXVST3CLAP
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LADDER FILTER

Moog-Style Ladder Filter

JSFXGFXVST3CLAP
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OTT

Multiband Upward/Downward Compressor

JSFXGFXVST3CLAP
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PITCH CORRECTION

Auto-Tune Style Vocal Pitch Correction

JSFXGFXVST3CLAP
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RESONATOR

Tuned String Resonator

JSFXGFXVST3CLAP
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REVERSER

Real-Time Reverse Buffer

JSFXGFXVST3CLAP
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ROBOTIZER

FFT Robot Voice

JSFXGFXVST3CLAP
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SLICER

Tempo-Synced Loop Slicer & Remixer

JSFXGFXVST3CLAP
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STEP FX

16-Step Effect Sequencer

JSFXGFXVST3CLAP
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STEREO SCOPE

Goniometer & Correlation Meter

JSFXGFXVST3CLAP
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SUB BLOOM

Pitch-Tracking Subharmonic Generator

JSFXGFXVST3CLAP
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TAPE STOP

Tape Stop & Spin-Up

JSFXGFXVST3CLAP
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TRANCE GATE

16-Step Rhythmic Gate

JSFXGFXVST3CLAP
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VINYL AGE

Vintage Vinyl Degrader

JSFXGFXVST3CLAP
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VOCODER

16-Band Channel Vocoder

JSFXGFXVST3CLAP
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WARPED DELAY

Modulated Degrading Delay

JSFXGFXVST3CLAP
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