I use the free version of Fritz. You can download it and it is a full version.
I can not judge the analysis quality but it is easy to use and works fine and its free.
Best Analysis Software


How does it work? I have use chessbase light. Doesn't that have Fritz? Let me know! Thanks for responding.

I prefer Chessbase, although I've been experimenting a bit with Aquarium and ChessAssistant lately. They each have their strengths and weaknesses. Chessbase is perhaps the most user-friendly.
The free version of Fritz is 5.32. I think it was originally designed as a DOS program, so its features are pretty basic. You also might want an interface that can handle a free UCI engine like Rybka 2.2 which is probably a lot stronger than old Fritz.
I'm just taking an informal survery to see what everyone thinks is the best analysis software/database. Let me know!