The best alternative to Soundflower is Loopback. It's not free, so if you're looking for a free alternative, you could try SoundDesk Virtual Devices. If that doesn't suit you, our users have ranked more than 10 alternatives to Soundflower and four of them are so hopefully you can find a suitable replacement. Other interesting alternatives to Soundflower are Sound Siphon and SoundDesk.
Configure advanced audio routing by creating virtual devices on macOS, supporting up to 64 input/output channels. Customize and mix audio from multiple sources, including hidden ones like Siri. It offers Pass-Thru for direct sound transfers and full accessibility via VoiceOver, ideal for audio processing.
Sound Siphon is a software package that makes your Mac’s audio output available as an audio input device. It enables you to send audio from one application to another where it can be processed, streamed, or recorded.
SoundDesk is the easiest way to turn your macOS into a professional mixing desk.
The SoundDesk Virtual Devices are connectors that you can use to route audio across apps.
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Compatible with current macOS. Easy guide to setup and route computer audio for recording. Generous freemium usage before limits hit.