Spreadsheet Library - Chess: Openings Database

Why Your Chess Openings Suck — Alex Crompton

Chess Opening Moves III –

Chess Openings and Book Moves

Chess Opening Explorer

Lichess Database: Which openings are most successful : r/chess

Chess engines vs. chess databases. Which one to use?

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

Encyclopaedia of Chess Openings, Wikiwand

Small Encyclopedia of Chess Openings ABCDE on CD (3rd Edition)

Caruana's approach to 1.c4 e5 Explained in an Opening Database by GM Boris Avrukh – Chessdom