It appears to be a software program that someone made up for DisneyLAND. It seems they made some sort of formula that uses the average wait time and how busy it is at different times. The software uses that information to help figure out what times to go on different attractions and when to pick up Fastpasses in order to limit the time spent waiting.
Here's a link to the Ridemax website.
It looks like the software is only available for Disneyland, not WDW.
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