Uncle Jimbo's Bug Huntin' Range
Warhounds (formerly The Crucible) is a starting point for a PL 7 campaign setting based on human soldiers serving in a galactic conflict, with new technological assumptions and a system to generate new alien species.
I've described a setting after the rise and fall of Humanity in They Who Follow .
My Cornelius Cycle outlines scenarios featuring characters from Michael Moorcock's Jerry Cornelius novels, once proposed for Stormbringer.
Sector Q; takes a starting point from the #dungeon23 challenge for Star*Drive.