EndeavorFX Contemporary Color
$29 for month of August (RRP $89)http://endeavorfx.com/contemporary-color.html
It was originally on sale for $99 with a RRP of $199 but Gearslutz talked them down as this is the company's first release.
Analog color is a truly wonderful thing, but frequency-dependent nonlinearity is usually obtained as a side effect (a tape machine is intended to record signal, an analog compressor is intended to compress, an equalizer is intended to filter etc.). Also, color is often accompanied with less desirable phenomena such as noise and flutter. Furthermore, a particular piece of analog equipment can be limited to a certain color, resulting in a color palette that is only as expansive as your gear collection.
Contemporary Color allows you to create customizable color from the ground up, fine-tuned for every track. It features:
A wide range of color from inaudible to extreme, saturating to transient-enhancing
Output that can be blended with the original signal without phasing issues
An intuative GUI that changes color as you dial in your personalized color
Low CPU Consumption