open library
bibliothèque libre
Definition:
Open Library is an online project intended to create “one web page for every book ever published”. Created by Aaron Swartz,[4][5]Brewster Kahle,[6] Alexis Rossi,[7] Anand Chitipothu,[7] and Rebecca Malamud,[7] Open Library is a project of the Internet Archive, a nonprofit organization. It has been funded in part by grants from the California State Library and the Kahle/Austin Foundation. Open Library provides online access to many public domain and out-of-print books.
Source: https://en.wikipedia.org/wiki/Open_Library
Remarks:
In French, we recommend the use of “bibliothèque libre” vs “bibliothèque ouverte”