Icon of program: Soundflower

Soundflower for Mac

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Dinkar Kamat

Updated 5 months ago

Audio routing solution for Mac

Soundflower is a free multimedia program that works as an audio router. It allows users to channel audio from one app to another, perfect for voice recording and live streaming. It acts as a virtual audio device, enabling different applications to "talk" to each other through a shared audio channel.

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Soundflower remains a popular choice because it is a powerful and free alternative to more expensive software. It's a key piece of software for anyone seeking a capture system audio for professional or personal projects. Once installed, its low latency and minimal CPU usage ensure a non-disruptive experience.

One program for all your audio needs

Soundflower stands out for its core functionality, offering an efficient method for routing audio. This versatility makes it ideal for a variety of applications, from podcasting to video editing and music production. Supporting both 2-channel and 64-channel audio, it caters to different routing requirements, while its seamless integration with Mac's audio system provides a quick and effective solution.

However, first-time users may find the setup process challenging due to the absence of clear, up-to-date instructions. The installation often needs navigating specific security protocols on newer macOS versions, which can be frustrating. Additionally, one significant drawback is that it captures all system sounds, including notifications and alerts, potentially picking up lots of distracting background noise during recording sessions.

Its open-source nature has also led to a lack of updates, causing many users to seek out more modern alternatives, including BlackHole or Loopback. While these newer tools often offer a smoother installation and more advanced features, they can also be more difficult or come with a price tag. Meanwhile, the program’s simple design and zero cost remain appealing to many users who only need basic functionality.

Audio freedom anywhere

With Soundflower, your device becomes a hub for audio, letting you easily route sound from one app to another. No cables, no clutter—everything stays digital and streamlined. Whether you are recording system audio, streaming live, or producing podcasts, the app makes it simple to capture exactly what you hear virtually. It’s a versatile tool that adapts to any audio workflow.

Setup might feel very tricky at first, but once it is installed, it shows up as a virtual device in your sound settings. Just set it as an input or output, and your apps will start working together seamlessly. Behind the scenes, it handles all the routing, letting you record, capture, or stream audio without ever reaching for a cable.

Free and just enough for most users

In conclusion, Soundflower is highly effective for routing audio on Mac. While its installation process can be a hurdle and some features are less than ideal, its powerful and efficient functionality makes it an essential utility for anyone looking to capture high-quality audio directly from their computer's system. Lastly, the free program is a major advantage for users who want the essentials.

Dinkar Kamat

Dinkar has more than 10 years of experience in content creation, including technical articles, travel writing, and product strategy. His expertise spans SEO, digital marketing, and structured editorial work. He focuses on producing content that is both accurate and accessible for diverse audiences.

  • Pros

    • Open-source
    • Very low latency and CPU usage
    • Supports 2- and 64-channel audio
    • Direct integration with Mac OS
  • Cons

    • Lacks updates
    • Captures all system sounds
    • Cannot hear audio when routing
    • Lacks clear instructions during setup
 0/3

App specs

Program available in other languages


Icon of program: Soundflower

Soundflower for Mac

Free Download for Mac

View an ad to download for free


User reviews about Soundflower

2.7

20 reviews

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Main reviews for you

  • Anonymous user

    A very light, indispensable tool for opening up a stock Mac's audio capabilities. Combined with AU Lab, I was able to easily equalize my Klipsch 2.1 desktop speakers that came out of the box so boomy as to be unusable. Now, they sound amazing... all with 2 free, light pieces of software that take a little work setting up and then... it's all good. I just have an AU Lab saved settings icon on my desktop that I click after a reboot and I have fantastic sound.

  • Jeff Flynn

    No modern Apple Silicon support

    On later macOS version (e.g. Tahoe), you can get the installer to run, but it will fail consistently (per `/var/log/install.log`) with clear errors indicating that ARM hardware is not supported (e.g., intel_x86 support only). There may be some GitHub forks for this but TBH I couldn't be bothered to waste more time. Look at something like Loopback if you really need this, but expect to pay for these modern options. I liked SoundFlower in it's hey-day to use with my Ableton rig, but don't have much need for it these days. Good luck!

  • Anonymous user

    Complete garbage. Avoid at all costs. Sets itself as default sound output. You've been warned

  • Anonymous user

    Trying to uninstall is even more horrid. Bits and such still hiding out that app cleaners could not quite remove. Had to Time Machine.

  • Anonymous user

    This was good in its day (like around 2014), but hasn't worked properly for years in newer versions of macOS. The modern and much more capable replacement is Loopback. (Some other software can do some of the same things, including Boom2, Movavi Sound Grabber, and various other utilities for grabbing streaming audio and video, but most of them really are intended just for that, e.g. recording Spotify streams.) I prefer Loopback, because it's a configurable virtual sound device, and can even be set up on an app-by-app basis (e.g., you can set it to record some long TED talk or whatever on YouTube in Chrome without echoing the audio to your physical output device, then go watch a movie in VLC without the audio from that interfering with your TED recording). Because the OS sees it as a device, it can be set in one for other purposes, such as screen-recording software like Voila. You can thus use such a combo to rip any online video even if you can't find a downloading app or browser extension that supports the site in question. (The only downside is you have to let the whole thing play from start to finish while you grab it. So, go make dinner or something.)I'll give this three stars, since it's still usable on old versions of Mac OS X. However, various newer, better programs are also.

  • Anonymous user

    Not working on my MacBook Air Catalina no sound in Manycam. I have tried every possible way of installing it but fails every time

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Is Soundflower safe?

100/100

Score result: Clean

This file passed a comprehensive security scan using VirusTotal technology. It is safe to download.

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Scan Info

Last scan
Tuesday, November 28, 2023
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File Integrity

File
Soundflower-2-0b2.dmg
SHA256
6b5e56d53238cf0f9075886aa40580634fc9d23368239f22eccebfd97c9f8e34
SHA1
42cbb40de784d6b7f365e88c49cfc4102812484c

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Soundflower has been thoroughly scanned by our advanced security systems and verified by industry-leading partners. This file comes from the official developer and has passed all our security checks, showing no signs of viruses, malware, or spyware. For more information, visit our Security and Trust Center