Hub board on FT4232.
In September, 2012, I was looking for a tool to work with a variety of interfaces (UART, SPI, JTAG, etc). As a result, I developed a board on FT4232. Why I choose this chip? I had one, and it gives four interface ports. Size ~50x80mm.
Board view
Layers view: top is red, bottom - cyan. Silk layers not optimized, because I made board by myself
Schematics
Schematic and board in DesighSpark PCB, and copies of copper and mask in gerber:)