Personal chess database I'm looking for non commercial program where I can import PGNs. And to visualize the games I want simple GUI and analysis-table like you will find here. Additionally it would be nice if the program provides an interface where I can write my own statistics.  

What I found was gnu chess, sunfish and jose. But those programs are more then I'm looking for.
SCID does everything you are looking for, it's great chess database software.