I use scid http://scid.sourceforge.net/ free and more than enough for most needs
ChessBase
I use scid http://scid.sourceforge.net/ free and more than enough for most needs
Same. Heard from John Bartholomew that you don't really need Chessbase until you're 2000+. Scid + Gorgobase is amazing in my uninformed opinion.
What is suite?
Is the megabase narrated games, or just bare pgn, and does it include correspondence games?
You mean annotated games?
Yes

a set of programs with a uniform design and the ability to share data.
What?
I have no clue what your problem is @bazinga2. But I am happy and using mine!