ChessBase Support - Details

engines - What chess app displays the name of the opening being used in the game? - Chess Stack Exchange

OpeningTree - Chess Openings on the App Store

Why was opening explorer removed from the app? - Chess Forums

Chess Openings Trainer on the App Store

Chess Openings Wizard - Apps on Google Play

A Beautiful Way to Study Opening with Spaced Repetition - Chess Forums

What is the best free online tool to learn chess openings? - Quora

Chess Openings: Amar Opening A00 #chessopenings

6 Awesome Chess Openings iPhone Apps

Chess Openings App Demo v. 1.3