Smooth analog style compressor
The free Classic Compressor by Kjaerhus Audio is a classic analog style VST Compressor Plugin with a lot of warmth and punch.
The Classic Compressor has been designed specifically for individual instruments and vocal, but the VST plugin is also useable on your final mixes.
The Classic Compressor plugin features smooth compression, adjustable knee (hard to soft), ultra low CPU usage, and support for all sampling rates.