Mastodawn

"Standard eBooks" (https://standardebooks.org/) hosts free public domain ebooks, many of which are sourced from Project Gutenberg. However, these books have been intensively cleaned up and are generally superior to their Project Gutenberg sources.

"Project Gutenberg Australia" (https://gutenberg.net.au/) has some free books that aren't available on Project Gutenberg, since Australia has different copyright laws from the USA.

"Baen" (https://www.baen.com/) specializes mostly in science fiction ebooks (and physical books). They also have a free library of ebooks. I've made some good finds there.

"FadedPage" (https://www.fadedpage.com/index.php) has some free ebooks that Project Gutenberg doesn't, apparently due to differences between Canadian and American copyright law.

It's worth noting that Libby has been acquired by a private equity firm, KKR. We can presume that they are extracting as much user data as possible, and monetizing it.

And for those who aren't afraid to fly the Jolly Roger, Anna's Archive is ABSOLUTELY the way to go.

https://en.wikipedia.org/wiki/Anna%27s_Archive

Standard Ebooks: Free and liberated ebooks, carefully produced for the true book lover.

Free and liberated ebooks, carefully produced for the true book lover. Download free ebooks with professional-quality formatting and typography, in formats compatible with your ereader.