For those who are looking for alternative audio mastering plugins, there are a range of options available, including:

For those who are looking for affordable alternatives to Ozone 9, there are several options available:

If you absolutely cannot pay a dime: use the free trial. If you liked it, save $5 a week for two months. You will own it forever, you will be safe, and you will actually finish your masters without your antivirus screaming at you.

Ozone 9 offers a suite of mastering tools, including a multiband imager, a stereo widener, and a limiter, to ensure that tracks translate well across various playback systems.

: Uses machine learning to analyze a track and suggest a custom signal chain. Ozone 9 added a "Vintage Mode" that automatically incorporates vintage EQ, compression, and tape modules for a warmer analog feel.