These plugins below are free to use.
The Vocal-King plugin! It’s been my dream to make a Vocal Plugin. The idea of this plugin is to simply bring out the presence and clarity in vocals. This is free and only windows 32bit version. It is also way higher in CPU than the paid version. The paid version supports mac, windows, vst2, vst3, 32bit, 64bit. Feel free to email me at [email protected] if your country does not support PayPal or for price reduction if needed.
If you can use 32bit plugins in your music daw, you might well try the C1-EQ10 plugin up above. It's cheap can gives much flexibility. It pretty much does the same thing as the vocal king just with a different style. Plus you can use a de-esser and eq too. It's way better that the free vocal king on cpu too.