An initiative of the Internet Archive, Open Library aims to create a web page for every book ever published. It functions like a traditional library, allowing users to digitally borrow millions of digitized books, including modern fiction and contemporary textbooks. Library Genesis (LibGen)
If FreeBookSpot is completely down or a specific ebook link cannot be fixed, these massive, legal, and open-source digital libraries serve as excellent alternatives: better freebookspotcom ebooks fix