Open-source alternatives to Audio Router

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

This project is a multi-room music server and library aggregator that centralizes local audio files and various streaming services into a single unified database. It functions as a media controller for DLNA and UPnP devices, enabling the management of music, podcasts, and audiobooks across networked speakers. The system is distinguished by its ability to synchronize audio playback across multiple speakers and brands simultaneously. It features a digital signal processor for loudness normalization and frequency correction, alongside an acoustic fingerprinting engine used for metadata enrichmen

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

Android Media is a framework library providing the primary system components for audio and video playback, session management, and media routing on Android. It includes a multimedia API for processing raw media streams, managing MIDI devices, and rendering video frames. The project features a dedicated metadata manager for organizing descriptive labels, content channels, and DRM configurations, alongside a session controller that synchronizes playback state with external controllers and manages media shortcuts for wearable devices. The library covers a broad range of capabilities including a

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

cpal is a low-level Rust audio hardware abstraction layer and cross-platform API. It serves as a unified interface for managing audio input and output streams across Windows, macOS, and Linux hardware, acting as a device driver wrapper to discover audio hosts and configure hardware devices. The project functions as a real-time audio streamer, utilizing a high-priority callback system to stream audio samples to hardware devices with minimal latency. The library covers audio hardware integration, including the discovery and configuration of sample rates and channel counts. It supports audio in

librespot is an open-source audio streaming client and library used to implement custom music players that authenticate and stream audio from the Spotify service. It functions as a framework for fetching, decoding, and routing remote audio streams to various system backends and audio sinks. The project specifically implements a Spotify Connect receiver, allowing it to act as a remote-controllable playback endpoint that appears as a selectable device within other Spotify applications. This enables the creation of virtual playback devices, headless music playback on remote servers, and the inte

EarTrumpet is a desktop utility for the Windows operating system that provides centralized control over system-wide audio. It functions as a taskbar-based interface for managing playback devices, monitoring active audio streams, and adjusting volume levels across the desktop environment. The application enables granular control by allowing users to adjust volume levels for individual running processes independently. It also supports multi-device audio routing, which permits the assignment of specific hardware output destinations to individual applications. These capabilities are facilitated t

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

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

Lyrebird is a real-time audio processing application designed for Linux systems that modifies microphone input. It functions by capturing and routing system audio streams through virtual devices, allowing users to apply frequency adjustments and voice effects before the signal is passed to other desktop applications. The application provides a graphical interface built with a declarative toolkit, enabling users to manage and toggle between custom voice presets. These configurations are stored locally, ensuring that specific pitch settings and audio profiles remain consistent across different

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

JUCE is a comprehensive C++ audio framework and digital signal processing library used to build cross-platform audio applications, audio plug-ins, and high-performance user interfaces. It serves as a development kit for creating audio processors compatible with industry-standard plugin formats for digital audio workstations, as well as a tool for MIDI and Open Sound Control communication between musical hardware and software. The framework is distinguished by its ability to maintain a single codebase for native desktop and mobile applications across multiple operating systems. It provides a f

BackgroundMusic is a system-level macOS audio management utility that provides an application volume mixer for independent gain and level adjustments for every running application. It functions as a system audio router and pause controller to manage how sound is handled across the operating system. The project features a virtual audio driver that routes internal system sound to recording software and input devices. It also includes automatic music ducking, which monitors system audio activity to pause music playback when other applications produce sound and resume it once that audio ends. Th

miniaudio is a single-file C audio library used for audio playback, capture, and hardware interfacing across multiple operating systems. It functions as an audio hardware abstraction layer, an audio processing engine, an audio synthesis engine, and a codec and resampler. The project implements a node-graph based system for routing digital audio signals, mixing, and 3D spatialization. It also includes a programmatic generator for noise patterns and basic waveforms used for sound creation and signal testing. The library covers digital signal processing, including audio format conversion and sa

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

This is an Android multimedia player designed to decode and play a wide variety of audio and video formats. It functions as a network media streamer and a multimedia library manager, indexing local files into a searchable database for organized access. The project includes a high-fidelity audio processor for routing signals through hardware interfaces like SPDIF and HDMI, and a Chromecast media controller for streaming content to external renderers and UPnP devices. It supports advanced visual rendering, including high dynamic range video with tonemapping, 360-degree video, and spatial audio.

This project provides open-source hardware designs for a high-end, repairable laptop. It defines a modular architecture centered on a precision-milled CNC aluminum chassis and a hardware layout that prioritizes accessibility and user-replaceable parts for long-term maintenance. The design is distinguished by the integration of a 4K AMOLED display and a custom wireless mechanical keyboard utilizing low-profile switches. The system employs a modular approach that allows the input system to be detached and used as a standalone peripheral. The technical scope covers high-performance motherboard

MPD is a headless music server daemon that indexes audio libraries and streams music to local or remote outputs. It functions as a music library manager and network audio streamer, providing a remote audio control protocol that allows external clients to manage playback, playlists, and database queries. The system acts as a multiroom audio coordinator, synchronizing audio distribution across multiple networked clients and hardware devices. It supports a variety of remote management capabilities, including a dedicated control API and the ability to broadcast audio streams over network protocol

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

ALVR is a wireless virtual reality streaming tool and headset driver that transmits content from a PC to a headset over Wi-Fi to eliminate physical cables. It functions as a session orchestrator that manages a network-based pipeline for high-resolution frames and a virtual driver layer that enables a computer to communicate with and track wireless hardware. The system utilizes a UDP network protocol to synchronize compressed video frames and positional tracking data. It employs hardware-accelerated H.264 encoding to minimize lag and includes a virtual audio router to redirect microphone input

wslg is an integration layer and display server system designed to run Linux graphical applications on Windows. It provides a bridge between Linux window management, audio routing, and system clipboards and the Windows host, utilizing a Wayland and X11 display server to support visual software. The system utilizes a virtual GPU architecture to provide hardware-accelerated rendering for graphics-intensive applications. It implements a Remote Desktop Protocol gateway to stream graphical frames and uses a specialized sound server interface to route audio and microphone data between the Linux gue

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

This project provides a desktop-based interface for remote control and screen mirroring of Android devices. It functions by establishing a persistent, multiplexed communication channel over the Android Debug Bridge, allowing for the transmission of raw binary data streams between a host computer and a connected mobile device. The tool distinguishes itself by injecting a lightweight binary into the mobile runtime to access system-level APIs for direct screen buffer capture and input event injection. By translating desktop mouse and keyboard signals into native Linux kernel events, it enables r

Swiftfin is a native Jellyfin media client for iOS and tvOS. It is a SwiftUI mobile application designed for streaming and browsing movies, music, and shows from a Jellyfin server. The application utilizes native Apple frameworks for hardware-accelerated decoding and includes an AVKit media player. This integration enables system-level color management for HDR to SDR conversion and supports native Apple ecosystem features such as picture-in-picture and external display output. The client provides tools for browsing and managing home media libraries, routing audio wirelessly, and adjusting pl

linux-wallpaperengine is a live wallpaper engine for Linux distributions. It functions as a controller for rendering animated backgrounds and interactive wallpapers on the desktop. The project integrates assets from the Wallpaper Engine ecosystem and provides a manager for multi-monitor setups. Users can assign unique animated backgrounds to individual screens or stretch a single image across multiple displays. The engine includes capabilities for managing wallpaper audio and modifying visual properties to match specific aesthetics. It also features a resource optimizer that pauses animation