Soundflower Alternative for Mac

Why Did Soundflower Stop Working on Mac?

Apple began requiring notarized kernel extensions in macOS Catalina (10.15) and moved audio driver development to the DriverKit framework. Soundflower's unsigned kext fails to load on Catalina and every subsequent macOS release. Users who upgraded from Mojave or earlier discovered that their audio routing on Mac broke immediately after the update.

The original Soundflower project on GitHub has not received a commit since 2014. Community forks exist but none have achieved reliable compatibility with macOS Ventura, Sonoma, or Sequoia. The underlying kernel extension architecture is a dead end because Apple will not reverse course on DriverKit. Any replacement must use the modern Core Audio HAL plugin or DriverKit approach to remain compatible with future macOS versions.

Apple Silicon Macs (M1, M2, M3, M4) enforce stricter security policies that prevent unsigned kernel extensions from loading under any circumstances. Disabling System Integrity Protection is not a viable workaround for production machines. The only path forward is a virtual audio cable for Mac built on Apple's current frameworks.

What Is the Best Soundflower Alternative for Mac?

LitLink stands out because it eliminates the manual Audio MIDI Setup steps that made Soundflower and BlackHole frustrating for non-technical users. One toggle creates the virtual audio device, configures the multi-output device, and enables mic passthrough so the user's voice still reaches Discord, Zoom, or OBS alongside the routed audio.

BlackHole is the closest spiritual successor to Soundflower. It uses the same Core Audio HAL plugin approach but ships as a signed, notarized installer that works on modern macOS. The tradeoff is that BlackHole requires manual configuration in Audio MIDI Setup to create a multi-output device and offers no built-in mic passthrough.

Loopback from Rogue Amoeba is the premium option at $99. It provides a visual drag-and-drop interface for routing audio between specific applications. Professional broadcast and podcast setups that need per-app audio isolation benefit from Loopback, but most users who simply want to route soundboard or desktop audio to a communication app do not need that level of control.

How Does LitLink Compare to Soundflower?

Soundflower created two virtual audio devices (2ch and 64ch) that appeared in System Preferences as audio outputs. Users had to manually create a multi-output device in Audio MIDI Setup to hear audio through headphones while routing it to the virtual device. LitLink automates this entire process with a single toggle, creating and configuring the multi-output device automatically.

The mic passthrough feature in LitLink solves a problem that Soundflower users struggled with for years. When using Soundflower with Discord or Zoom, the user's microphone input was separate from the routed audio. Users had to create complex aggregate devices to combine their mic with the virtual audio. LitLink handles this automatically so voice and routed audio reach the receiving application together.

How Do You Replace Soundflower with LitLink?

• Uninstall Soundflower by running the uninstall script included in the original Soundflower download, or delete the kext manually from /Library/Extensions
• Download LitLink from the LitPads features page or the Mac App Store
• Open LitLink and toggle the virtual audio driver on
• LitLink automatically creates the "LitLink + Speakers" multi-output device and enables mic passthrough
• Open OBS, Discord, Zoom, or any receiving application and select LitLink Audio Bridge as the input device
• Your Mac system output is automatically set to "LitLink + Speakers" so desktop and soundboard audio routes through the virtual device
• Test by playing a sound in LitPads or any audio app and confirm it appears in the receiving application

Applications that used Soundflower (2ch) as their input source need only one change: select LitLink Audio Bridge instead. The audio signal path is identical. Sound travels from the source application through the virtual audio device to the receiving application. LitLink uses the same Core Audio framework that Soundflower relied on, so latency and audio quality are equivalent.

Users who created aggregate devices or multi-output devices in Audio MIDI Setup for Soundflower can delete those manual configurations. LitLink manages its own multi-output device automatically and keeps it in sync when audio hardware changes, such as connecting or disconnecting headphones.

Which Soundflower Alternative Works Best for Recording and Streaming?

OBS Studio users who previously routed audio through Soundflower will find LitLink the simplest migration path. Enable the driver, select LitLink Audio Bridge as the OBS audio input, and the stream receives desktop audio immediately. The built-in mic passthrough means the streamer's voice and soundboard audio arrive on the same device without creating separate audio sources in OBS.

Podcast recording workflows that capture both the host's microphone and desktop audio (soundboard effects, music cues, interview audio) work well with LitLink's automatic routing. The mic passthrough combines the microphone signal with the virtual audio into one input, simplifying the recording setup in GarageBand, Logic Pro, Audacity, or any DAW.

Loopback remains the right tool for users who need to capture audio from one specific application while excluding all other system sounds. Radio producers running multiple audio sources simultaneously, or broadcast engineers who require isolated audio feeds per application, should consider the $99 investment. For everyone else, LitLink provides the same core functionality that Soundflower offered, rebuilt for modern macOS and available at no cost.