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.



There are many alternatives to Audio Hijack for Mac if you are looking for a replacement. The best Mac alternative is Sound Siphon. It's not free, so if you're looking for a free alternative, you could try Sneedacity or Recordia. If that doesn't suit you, our users have ranked more than 10 alternatives to Audio Hijack and 11 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Audio Hijack are AudioDirector, Piezo, AudMonkey and Backtrack.
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.



Sneedacity (named after Sneed's Feed and Seed from The Simpsons episode, "E-I-E-I-D'oh") is a free (libre), open source, and privacy-respecting audio recording and editing suite forked from Audacity.
Recordia lets you record audio directly from the menu bar or with a global keyboard shortcut.



AudioDirector offers you the freedom to edit and mix the soundtrack of your video, the sound effects and even the voices. Restoration tools are used to correct the sound defects. AudioDirector integrates by dynamic link with PowerDirector for total fluidity and a considerable...




Piezo makes it a snap to record audio on your Mac. With just a few clicks, you can record audio from any application, or from audio input devices like microphones. Piezo's great for recording from VoIP applications like Skype and iChat as well.




Some users think Piezo is a great Audio Hijack alternative, some don't.
"The free and open source audio editor" is an easy-to-use, multi-track audio editor and recorder for Windows, macOS, GNU/Linux and other operating systems. It is a fork of Audacity that respects your privacy and the GNU License.

Backtrack lets you record all those conversations, calls, and brainstorming sessions that you forgot to click the record button for.




A VST (plus AudioUnit on OSX) plugin host designed for live use. Based on the JUCE 'audio plugin host' code, heavily modified to better suit my purposes.

Use the ShurePlus™ MOTIV app for high-quality digital recording and editing with MOTIV microphones or as a standalone tool.




As a professional real-time audio recording and editing software, Boilsoft Audio Recorder can record lossless sounds from any internal or external sources such as Microphone, CD player, line-in devices and other applications (like Skype, QuickTime Player, RealPlayer, iTunes...
Audion is a light, simple and powerful audio CDs and MP3s player.
Features



Audio Hijack records. Audion is a (relatively) simple audio player.
Audio hijack routes, processes, and records audio. Audion plays CDs. Not related except that both involve audio.
Audition is a player, AudioHijack is a recorder.


This alternative is disputed. Audion is a legitimate Audio Hijack alternative, but it might have issues that some users think are important.
none of these actually work or work how they are adverstised do more research