STE Club- Chess Tutor

How to get the most from ChessBase 16

Shane's Chess Information Database - Wikipedia

Chess Opening Explorer

learning - Where can I find free training tools like detailed annotated chess openings, middle games and endgames in the PGN format? - Chess Stack Exchange

sql - Databases for chess games - Stack Overflow

FREE CHESS DATABASE ON MOBILE PHONE!

DEEP Hiarcs Chess Explorer for Windows

We made a tool that lets you search the lichess game database by chess concepts. Link in the comments : r/chess

Our purpose at Opening Master Chess Databases

Opening Repertoire Selection Using a Chess Database – Grand Rapids Chess Center