Lomax, the Sub-Librarian would applaud. LibraryThing, the site your humble Gazetteer has used to manage her collection of books for about 15 years, has now removed all fees and book limits, without the addition of ads. The fees were always low, but in response to the global pandemic, both the site and its mobile app (which allows you to add books by using the phone’s camera to scan the ISBN barcodes) are now completely free to use.
Your Gazetteer has long preferred LibraryThing to GoodReads, and is taking this opportunity to recommend it to all. It’s flexible and easy to use, and it includes enjoyable social features (while allowing you to keep your library or individual books private if you desire).
Your book information is not collected for marketing; the site uses it only for gathering information on books and authors (as in this page for Arthur Conan Doyle). Members also engage in collective endeavors such as entering the personal libraries of famous people. This is an excellent opportunity to give it a try.
Perhaps it will even spur the Gazetteer to finish entering all of her books.
Note: This is not an official endorsement by the NMSOBC.