iZotope Ozone is described as 'As the industry’s most comprehensive mastering suite, Ozone 8 adds to its legacy by introducing new intelligent signal processing, spectral shaping, Tonal Balance Control, and more. It’s the smartest version of Ozone yet' and is an app in the Audio & Music category. There are more than 10 alternatives to iZotope Ozone for a variety of platforms, including Windows, Mac, iPad, Online / Web-based and Linux. The best alternative is Matchering, which is both free and Open Source. Other great apps like iZotope Ozone are Fabfilter Pro C (Paid), JAMin (Free, Open Source), Audio Mastering (Paid) and Lurssen Mastering Console (Paid).
FabFilter Pro-C 2 is a high-quality compressor plug-in for the most demanding engineers. Whether you need subtle mastering compression, an upfront lead vocal, that magic drum glue or deep EDM pumping: Pro-C 2 gets the job done with style!
JAMin is the JACK Audio Connection Kit (JACK) Audio Mastering interface. JAMin is an open source application designed to perform professional audio mastering of stereo input streams. It uses LADSPA for digital signal processing (DSP).
Lurssen Mastering Console is an application for Mac/PC and iPhone/iPad designed to perform mastering of audio files using the process developed by Grammy Award winning mastering engineer Gavin Lurssen in his own studio.
Final Touch is a professional audio post production system for iPad. Combining Maximizer, Equalizer, 4-Band Compressor, Stereo Imager, Reverb and Dithering into one integrated app, it gives your mixes a huge, balanced, polished and professional sound.
Complexer 2 is a multi-stage dynamics processor, featuring three independently controlled dynamics processors, each with a choice of six different modes: Upward and downward compressors, upward and downward expanders, a limiter, and a gate.