.CTG file extension

This is the basic program to work with .CTG extension

ChessBase Light 2007

ChessBase Light 2007 ChessBase openings book

The program works with the following extensions: cib, cbz, cit, ck1, ck2, cbs, ck3, cko, ckn, cba, cp1, cbb, cp2, cbc, cbe, cp3, cbf, cpn, cpo, cbh, ctb, cbm, ctg, cbp, cto, cbt, pgi, cbv, pgn and cbgi

.CTG extension is also supported by the following programs:


ChessBase ChessBase openings book

ChessBase 13 is a personal, stand-alone chess database.
ChessBase 9

ChessBase 9 ChessBase openings book


WhereIsIt WhereIsIt? Catalog Group File

32-bit media catalog.

GWhere MySQL Tools for

GWhere allows you to manage a catalog of your CDs and any other removable media.
ChessBase Reader

ChessBase Reader ChessBase openings book

Read chess games written in various formats and display them on a chess board.