hello dear admin i have selected a few opening books for stockfish and new engines and i hope they can be added.
opening book for stockfish: (Polyglot) http://rebel13.nl/download/books.html , https://chess.massimilianogoi.com/download/stockfish/ , https://chess.massimilianogoi.com/download/polyglottolerant/# , and (OKE) http://rebel13.nl/rebel13/oke.html , (Armageddon Openings) https://www.sp-cc.de/armageddon-openings.htm , ( The Drawkiller Openings) https://www.sp-cc.de/drawkiller-openings.htm , (The SALC opening) https://www.sp-cc.de/salc-openings.htm ,
Here again the complete list of opening books with a few engines: https://www.sp-cc.de/downloads--links.htm
and as new alternative engines there would be: SugaR, CorChess, asmFish, Cfish, Brainfish, Raubfisch, ShashChess, can be found in this list: https://chess.massimilianogoi.com/download/chessengines/ .
Endgame database: (7-piece Syzygy tablebases) http://tablebase.sesse.net/ , I hope it is possible to insert this endgame database in ncm if the memory allows it
here are a few other engines: (Critter 6,1) http://www.vlasak.biz/critter/ , ( Fire 7.1) https://chesslogik.wixsite.com/fire/download , (Rybka 2.3.2a) http://www.rybkachess.com/index.php?auswahl=Demo+version , (Aristarch 4.50) https://zipproth.de/chess/downloads/ ,
I hope that you can effectively insert them into the ncm program if there are no licensing problems. since I and the other users would be very happy about improvements of this kind. I hope that it is possible to insert the (Brainfish Engine) and the (Celebrium Opening Book) https://zipproth.de/Brainfish/download/ , despite the licensing because I have seen other program providers who use it even though it is licensed.