RE:Match takes the color and tone from one image and transfers it onto another. People who aren't familiar with color correction can use it to get more matching clips, while professionals can pre-grade to simplify their workflow. It matches colors automatically, correcting one shot to match another when working with multiple takes or cameras.
Control is flexible. RE:Match can match using the whole image or part of an image, and can reference any point in time. A Color Correction Dissolve blends corrective matching between user-selected reference frames along the timeline, and the reference can even be a set of stills. You can store the current color correction and reuse it on other sequences by cutting and pasting the plug-in to another clip. It works well with over-bright values and very wide dynamic ranges, and can handle more than one cut within a sequence.
RE:Match Pro is a separate product that adds stereo-focused tools, including auto image registration for stereo pairs using per-pixel optical flow, occlusion handling between the two views, frame edge difference matching, and visualization modes.