I saw this at the RPG Corner blog. Breachworld is a Kickstarter by Jason Richards that sounds a lot like Rifts without the clunk of the SDC / MDC Palladium system. Actually, it uses Mini Six, which is a striped down version of Open 6, and happens to be OGL.
Heck, it even has an endorsement by Kevin Siembieda:
I was interested in reworking Rifts to strip the system away from the setting, and it appears that Breachworld might have done so without the fear of a lawsuit from Palladium Books ;)
From the project's blurb:
Welcome to the Breachworld RPG, a post-apocalyptic anything-goes sandbox world in desperate need of exploration or exploitation by you, the intrepid tabletop gamer. By backing this Kickstarter, you will help bring this world to life. In appreciation for your help, you'll have the opportunity to join in the adventure, and at a bargain.