The omega is a hot swap 30%(30 or 29 keys depending on the layout you choose) inspired by the Zlant and the Alpha 28 keyboards.
The omeaga4 adds a 4th with a few options to make this more than a novelty piece.
The plate files, stls for 3D printing, and STEP files can be found in the docs folder.
There are also gerbers already generated in the gerber folders.