Open-source alternatives to EqMac

EasyEffects is a real-time audio processor and system-wide effects manager designed for PipeWire audio streams. It functions as a comprehensive suite for applying filters, equalizers, and limiters to both input and output audio across the entire system. The project distinguishes itself through its use of deep learning for neural network noise suppression and voice isolation, as well as its ability to simulate physical acoustic environments using impulse-response convolution. It includes a sophisticated preset management system that allows users to associate specific audio configurations with

FineTune is a macOS audio management tool designed for directing application audio streams to specific output devices and controlling per-app volume levels. It functions as an audio routing manager and a system utility for device management. The project features a multi-band audio equalizer with headphone response correction and a hardware interface for adjusting external monitor volume levels via the display data channel. It also includes a control interface that allows volume and routing changes to be triggered by external scripts using custom URL schemes. The software covers broader capab

BlackHole is a system-level virtual audio driver designed for macOS that enables real-time routing of digital audio signals between applications and hardware. By functioning as a kernel-level extension, it creates a virtual loopback interface that allows users to transfer sound streams across software environments without the need for physical cables or external hardware. The software distinguishes itself through its ability to aggregate multiple physical and virtual audio sources into a single, unified interface. This abstraction layer supports complex signal management, including the mirror

Audacity is a cross-platform digital audio workstation and multi-track audio editor. It serves as a comprehensive suite for capturing live audio input, refining sound files through splicing and effects, and mixing multi-track audio files using a non-destructive waveform interface. The project functions as a VST3 plugin host, providing a software environment to load and execute audio effects and virtual instruments for real-time signal processing. It also includes an audio spectrum analyzer for visualizing frequencies and waveforms to identify specific sonic characteristics. The software cove

Virtual-Display-Driver is a kernel-level driver for Windows that emulates physical monitors and audio devices. It serves as a virtual monitor emulator, headless server display emulator, and virtual audio device driver to enable extended desktop space and sound routing on systems without physical hardware connections. The project enables the simulation of monitors with custom resolutions, refresh rates, and identification profiles, including support for High Dynamic Range output. It also provides software-defined audio interfaces to simulate virtual microphones and speakers. The software cove

Deej is a hardware-to-software bridge and system audio manager written in Go that maps physical Arduino sliders to volume levels on Windows and Linux. It functions as a cross-platform audio mixer that allows for the control of master volume, microphone levels, and individual application audio through an external hardware interface. The project distinguishes itself by providing a configuration-driven mapping system that binds software processes and hardware audio devices to specific physical sliders. It includes logic for slider direction inversion to correct for reversed hardware wiring and s

This project is a system audio processor and digital signal processing engine designed to enhance system-wide sound volume and clarity. It functions as a high-fidelity sound enhancer and parametric audio equalizer that shapes the sonic profile and timbre of audio across all output devices. The software utilizes a virtual audio device driver to intercept system audio streams at the kernel level, redirecting them through a processing pipeline. This allows for real-time sound processing and low-latency audio filtration to minimize the delay between sound generation and output. The system covers

Surge is a polyphonic software synthesizer and VST plugin designed for complex sound generation. It functions as a hybrid synthesis engine, combining subtractive, wavetable, frequency modulation, and physical modeling techniques to produce audio. The project distinguishes itself through extensive microtuning capabilities, supporting non-standard musical scales and intonations via industry-standard tuning files. It also features an Open Sound Control compatible architecture for remote parameter management and hardware synchronization. The system covers a broad range of audio engineering capab

NoiseTorch is a cross-platform audio processor and real-time noise filter designed to suppress ambient sound from audio streams. It functions as a virtual microphone noise suppressor and routing tool, capturing system audio sources and directing filtered signals into virtual input or output devices. The application uses a recurrent neural network to distinguish between human speech and ambient noise. It provides a virtual denoising microphone that removes background noise from a selected input, alongside tools for filtering audio output streams. The system includes capabilities for audio dev

Spek is an acoustic spectrum tool and audio frequency visualizer designed to decode audio streams and analyze their spectral density. It functions as an audio spectrogram analyzer that displays frequency distributions to help identify the sonic characteristics of audio files. The tool specifically includes capabilities as a lossy compression detector, allowing for the identification of encoding artifacts and frequency cut-offs caused by lossy transcoding. The software covers audio file inspection and spectral analysis, providing the ability to select individual audio streams and channels. Us

QuickRecorder is a screen recording software designed for capturing desktops, application windows, and system audio. It functions as a multi-device video recorder and tutorial capture tool, synchronizing video feeds from a computer and connected mobile devices into a single stream. The system distinguishes itself through an alpha-channel video exporter that produces recordings with transparent backgrounds. It also includes a presenter overlay system that renders a floating camera feed over screen captures and a specialized tutorial toolset that provides mouse movement highlighting and a magni

Mixxx is a free, open-source DJ application that runs on Windows, macOS, and Linux, providing a complete platform for mixing audio tracks with beat detection, key analysis, and real-time effects during live performances. It functions as a digital mixer that supports MIDI controller mapping, timecode vinyl control, and custom skin layouts, while also serving as a live performance recording tool that can capture mixes to audio files and broadcast them to internet radio servers in real time. The application distinguishes itself through a comprehensive architecture that coordinates automated play

MusicPlayer2 is a desktop music player for Windows built on the BASS audio engine, designed for high-quality local audio playback with real-time spectrum visualization. It functions as a local music library manager, organizing tracks by artist, album, and genre, while also serving as an online metadata and artwork downloader that fetches lyrics and album covers automatically. The player features a fully customizable interface defined through XML configuration files, and includes a synchronized lyrics display with desktop overlay and karaoke-style highlighting. The player distinguishes itself

Recorder is a JavaScript library for capturing audio from microphones and encoding the resulting data into multiple formats, including MP3, WAV, and WebM. It provides a unified interface for cross-platform audio recording across web browsers and mobile applications. The library functions as an audio signal processing tool and waveform visualizer, offering real-time visual feedback through frequency histograms and waveforms. It includes specialized capabilities for encoding and decoding dual-tone multi-frequency telephone keypad tones. The project covers a broad range of audio manipulation ca

Shairport-sync is an AirPlay audio streaming receiver that enables the reception of wireless audio streams from Apple devices and routes them to system sound servers or hardware devices. Its primary purpose is to facilitate multi-room audio synchronization, aligning output across multiple playback devices to ensure content plays in unison. The project distinguishes itself through advanced digital signal processing, including impulse-response convolution filtering to correct frequency response. It provides precise audio timing adjustments to compensate for amplifier latency and offers extended

Overtone is a Lisp audio synthesis library that provides a programmable environment for designing synthesizers and generating real-time audio. It serves as a digital signal processing framework for live sound programming, integrating an audio sample manager for retrieving and caching sounds from remote repositories and a musical sequence generator for composing melodic and rhythmic structures. The project distinguishes itself through its specialized interfaces for hardware and networking, featuring a dedicated system for routing MIDI data and exchanging Open Sound Control messages between sof

YASB is a customizable status bar framework and desktop shell component for Windows. It provides a toolkit for building personalized information bars using a modular class-based widget architecture and CSS-based styling. The framework distinguishes itself through deep integration with Windows tiling window managers, allowing users to display active workspaces, tiling layouts, and window focus states. It also features automated visual consistency by generating system color schemes based on the current desktop wallpaper. The project covers a wide range of capabilities, including real-time syst

The fre:ac audio converter project

Nannou is a creative coding framework for Rust designed for building interactive visual and audio sketches. It provides a loop-based API with hardware-accelerated 2D and 3D rendering, serving as a toolkit for generative art production and multimedia installation design. The framework is distinguished by its comprehensive hardware communication interface, which bridges software with physical devices via MIDI, OSC, DMX, serial, and laser DAC protocols. It also includes specialized projection mapping tools for warping visual output to fit non-standard physical surfaces and a dedicated GPU shader

PicList is a cloud image upload manager and storage file browser designed to facilitate image hosting for Markdown documents. It serves as a bridge between document editors and cloud providers, providing a local server that accepts image uploads and returns formatted Markdown or HTML links. The tool features an image preprocessing pipeline that applies watermarks, compression, and custom renaming patterns before files are uploaded. It supports synchronization of application settings, image albums, and plugins across multiple devices using WebDAV and Git. The system manages files across vario

AudioNoise is a digital audio effects library and signal processor designed to manipulate audio waveforms through digital filtering and echo simulations. It functions as an analog circuit emulator, simulating the behavior of hardware guitar pedals and phasers. The project provides tools for experimental sound processing, including the generation of random digital noises and textures. It also includes an audio waveform visualizer that renders digital audio data as visual graphs to analyze the results of signal processing. The library implements capabilities for digital audio processing and an

Oboe is a native C++ library designed for building high-performance, low-latency audio applications on Android. It serves as a unified wrapper and native API for managing audio streams, sample rates, and hardware routing across different Android operating system versions. The library provides a consistent interface by automatically selecting the most efficient audio backend at runtime, switching between AAudio and OpenSL ES to ensure the lowest possible latency. It enables exclusive-mode hardware access to bypass the system mixer and utilizes a high-priority asynchronous pull model for audio

This project is a set of digital signal processing routines and firmware designed for building modular synthesis hardware and control voltage modules. It functions as a comprehensive system for Eurorack synthesis, incorporating a physical modeling synthesis engine, a granular synthesis module, and a dedicated control voltage processor. The system distinguishes itself through a specialized synthesis engine that simulates the acoustic properties of strings, reeds, and percussion using modal resonators. It also features a MIDI to CV converter for monophonic and polyphonic operation and a step se

This project is an acoustic keystroke recognition system and audio side-channel analysis tool. It identifies typed text by analyzing audio recordings of keyboard sounds through waveform correlation and linguistic frequency analysis. The system distinguishes itself by combining digital signal processing with a substitution cipher decryptor. It uses simulated annealing and n-gram probability maps to recover plaintext from encoded strings and identifies specific keys by comparing captured waveforms against trained sound profiles. The toolkit covers a broad range of capabilities, including real-

SoundJS is a JavaScript audio library and asset manager designed to load and play audio across different browsers using a consistent API. It serves as a wrapper that abstracts the Web Audio API and HTML5 Audio to provide a cross-platform playback system. The project ensures consistent sound across devices by supporting Web Audio, HTML5, and mobile plugins. It includes specific mechanisms for mobile environments, such as unlocking audio playback on iOS via user-initiated touch events and managing playback continuity during screen locks. The library covers asset management through the registra