.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: pgi, cbt, pgn, cbv, cbz, cib, cit, ck1, cbs, ck2, cko, ck3, cba, ckn, cbb, cp1, cbc, cp2, cbe, cp3, cbf, cpn, cpo, ctb, cbh, ctg, cbm, cto, cbp 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.