ChessBase 13 is a personal, stand-alone chess database.
Main features:
- Retrieve games according to openings, players and tournaments.
- Generate tournament cross tables and full graphic statistics of players or openings.
- “Similarity search” shows all games with similar pawn structures, sacrifice patterns, endgame positions, etc... (
more)
The program works with the following extensions: 
cbf, 
cpo, 
ctb, 
cbh, 
ctg, 
cbm, 
cto, 
cbp, 
pgi, 
cbv, 
pgn, 
cib, 
cbz, 
cit, 
ck1, 
ck2, 
cbs, 
ck3, 
cko, 
ckn, 
cba, 
cp1, 
cbb, 
cp2, 
cbc, 
cp3, 
cbe, 
cpn, 
cbgi, 
cbtt, 
ctg-t, 
cto-t, 
ctb-960, 
ctb-ouk, 
cto-960 and 
cto-ouk