Fantasy Grounds is an online platform that a GM can set up a campaign to share character sheets, maps, rolls and manage all those unruly players. Frankly, I've only used it for D&D, the 5e system, so far. However, it has come to my attention that "Damned" (the person, not a state of being) created a ruleset for FG that can be used with Rifts. I've had an eye out for a ruleset for Rifts for ages but I've never found one. This isn't an exact fit but its close enough to work. See my YouTube tutorial on how to set it up (link below). Below is also the modified extension from "Damned" that has the Class type for convenient holding of all those messy Classes and Races, without those unsightly AC fields.
Here is the Extension modified for Rifts. Change the .zip extension to .ext and copy it into the Fantasy Grounds Extension folder.