parametric-eq

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+ — free, open source, GPLv3

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

Modern Windows Equalizer APO GUI with parametric EQ, AutoEQ, Squiglink targets, presets, live preview, portable app, and installer.

On-the-go EQ manager for the CrinEar Protocol Micro, Protocol Max, FiiO KA15, FiiO K13 R2R, SnowSky Melody, SnowSky Tiny A and TRN Black Pearl: keep your EQ profiles on your Android phone, plug the DAC in and send one in seconds.

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.

Free EQ software for EPZ TP35 Pro, TRN Black Pearl, Moondrop, FiiO, Truthear KEYX, and other USB DAC dongles

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).

Professional audio EQ profiles for Equalizer APO - 28+ optimized configurations for different occasions and music genres. Designed for indoor subwoofer systems.

System-wide parametric EQ, per-app mixer and headphone correction (AutoEQ + squig.link) for macOS. No driver, built on Core Audio process taps.

🎧 All-in-one offline tool for reviewing, tuning and comparing IEMs. Rust core, Tauri desktop app, cross-platform builds. Based on IEM Tool by MyLittlePrimordia.

Tune the EQ inside the Moondrop CHU 2 DSP earphones, from Windows. Unofficial, MIT.