Free real-time audio effects for music listening: EQ, tube amp, AM radio, visualizer, and 100+ more. Web/PWA, desktop, Chrome/Edge extension, VST3.
-
Updated
Oct 26, 2026 - JavaScript
Free real-time audio effects for music listening: EQ, tube amp, AM radio, visualizer, and 100+ more. Web/PWA, desktop, Chrome/Edge extension, VST3.
System-wide macOS audio equaliser with 64-band parametric EQ and real-time meters.
Compact PipeWire system-wide parametric EQ for Linux desktops
Free 10-band system EQ for macOS - SoundSource alternative with per-device profiles, HDMI volume control & AutoEQ integration
macOS system-wide parametric EQ with real-time spectrum analyzer. Built in a day because it shouldn't need to exist. Native macOS system-wide parametric EQ — CATap, no virtual audio drivers, no Electron, no paywall.
SyncHz (同频): automatic sample-rate switching for Apple Music on Mac, so Lossless and Hi-Res Lossless play bit-perfect up to 192 kHz. Plus a driverless AutoEq / PEQdB headphone EQ. Free, open-source menu-bar app for macOS 15+.
System-wide parametric equalizer for macOS 13+ with AutoEQ, calibration and a visualizer. Free, open source (GPLv3). Developer ID signed, Apple-notarized releases.
FreeEQ8 is a professional-grade, free and open-source 8-band parametric EQ plugin for macOS, Linux, and Windows. Linear phase, dynamic EQ, match EQ, per-band drive, band linking, M/S processing, oversampling, and a real-time spectrum analyzer. FabFilter Pro-Q alternative for $0–$20
VANTA Music: a free Android music player with a live AI DJ, Dolby Atmos, lossless audio, a 31-band EQ, retro player widgets, Android TV and Android Auto. Downloads and release notes.
On-the-go EQ manager for USB DACs from CrinEar, FiiO, SnowSky, TRN, Moondrop and Kiwi Ears: keep your EQ profiles on your Android phone, plug the DAC in and send one in seconds.
Modern Windows Equalizer APO GUI with parametric EQ, AutoEQ, Squiglink targets, presets, live preview, portable app, and installer.
ESP32-S3 firmware that turns a $20 dev-board into a 2-in / 4-out audio DSP. UAC-class audio + browser-controlled PEQ / crossover / room EQ. Active 2-way speakers, embarrassingly cheap.
System-wide parametric EQ + audio-effects engine for Linux, macOS & Windows — GUI, TUI & CLI, with FxSound & EqualizerAPO preset support
Native macOS menu bar app for the Qudelix 5K DAC — parametric EQ with live response curve, presets, volume, and one-click AutoEq import.
System-wide parametric EQ for macOS — Core Audio process taps, native vDSP engine, AutoEQ integration. No drivers, no kexts.
Per-tab 11-band parametric equalizer, bass boost & volume booster for Chrome, Edge & Opera. Works on YouTube, Spotify & any tab. 100% local, open-source (MIT).
Tune the EQ inside the Moondrop CHU 2 DSP earphones, from Windows. Unofficial, MIT.
System-wide parametric EQ, per-app mixer and headphone correction (AutoEQ + squig.link) for macOS. No driver, built on Core Audio process taps.
Professional audio EQ profiles for Equalizer APO - 28+ optimized configurations for different occasions and music genres. Designed for indoor subwoofer systems.
To associate your repository with the parametric-eq topic, visit your repo's landing page and select "manage topics."