Best free chess opening database

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chess_pagol

Hi

What is the best free opening database ? I need it to analyze openings and games. Is https://database.chessbase.com/  at the top of list? let me know which is the best in terms of updated, error free, efficiency ??

Ofgeniuskind_closed
Chessbase is great with millions of games to choose from, I don't remember if it was free. I think if you just google "chess opening database" you'll be fine.
IMKeto

chessbase is not free.  

Download the weekly games from theweekinchess.com

Neskitzy

Check pgnmentor.com