Britbase download links
BritBase has many cousins. Looking for an obscure event to download? Don't miss the other national chess game databases.
RUSBASE (part III) by Alexey Popovsky
Everyone needs to download Russian chess events. 'A project to record all important chess tournaments and matches held in Russia.' Has links to parts I and IV.
Annotated Chess Databases by Jan van Reek
Free downloads of chess matches from 'Lopez to Kramnik' and super tournaments. Separate information about Euwe's matches.
Chess Database by Karl-Heinz Milaster
'Annotates your chess game or position with reference games, sorted by strength of players.' Available for download.
GambitChess
Download files with games from well known chess books. In Italian and English.
ChessLib Downloads
Downloadable chess game database. Downloads organized by ECO opening code. Also has an endgame database.
ChessMix.com
Database of recent chess games (called '10 Days' after its update frequency), calendar, and tools. By GM Ventzislav Inkiov for the serious chess player. Download the newest issue free. Download past issues with a free trial.
TWIC Archive
Past issues of the The Week in Chess for download. Has chess game downloads in PGN and ChessBase format.
University of Pittsburgh (UPITT) Chess Archives
One of the first chess download services. Good starting place for thousands of master-level chess games to download. No longer updated regularly.
PGN standard
The original Portable Game Notation (PGN) standard for digital chess games in Web page format. Read this to understand the techhical format of your downloads.
An Extension to the PGN Standard
Addresses some of the issues that the original Portable Game Notation (PGN) standard missed.