Aqlossv0.3.1Open Source · GPL-3.0Audio,
uncompromised.
An open-source music player with a Rust audio engine. WASAPI Exclusive on Windows for bit-perfect output. FLAC, ALAC, WAV and more, up to 32-bit / 384 kHz.
What it does
Built around the audio,
not around the marketing.
Click any card to expand details
Hi-Res Formats
FLAC, WAV, AIFF, ALAC, MP3, AAC, OGG Vorbis, Opus - decoded up to 32-bit / 384 kHz where your hardware supports it.
Rust Audio Engine
Built on Symphonia and CPAL in Rust. Minimal overhead, predictable latency, memory-safe from the ground up.
WASAPI Exclusive
On compatible Windows hardware, Aqloss bypasses the system mixer entirely for bit-perfect output.
Flutter UI
One codebase across platforms. Not Electron - compiled native via Flutter. Stable on Windows and Linux.
EQ & Processing
10-band equalizer, ReplayGain normalization, crossfade, gapless playback, and Last.fm scrobbling.
No Cloud, No Telemetry
Open source under GPL-3. No accounts, no tracking, no telemetry. Your library stays on your machine.
Platform support
Where it runs today.
Windows and Linux are the actively maintained targets. Hover the icon for audio API details.
Windows
WASAPI Exclusive
Linux
CPAL (ALSA / PipeWire)
Android
CPAL (AAudio)
macOS
Core Audio
iOS
AVAudio
WASAPI Exclusive (bit-perfect) is available on Windows only when the audio device and driver support it. On Linux, audio goes through the OS mixer via CPAL.
Under the hood
Technical specifications.
Max Bit Depth
32-bit float
Max Sample Rate
384 kHz
DSD Support
Not supported
Exclusive Mode
Windows only
Shared Mode
Windows · Linux
Audio Decode
Rust · Symphonia
Output Layer
WASAPI / CPAL
License
GPL-3.0
“The signal path should do as little as possible between the file and your ears - and be honest about what it does.”
Common questions
FAQ.
Get started
Download Aqloss.
Free and open source. No account required.