| Organization | Address |
| Biblioteca Virtual Universal | https://www.biblioteca.com.ar |
| Ebiblioteca | https://www.ebiblioteca.org |
| Free Editorial | https://www.freeditorial.com |
| Internet Archive | https://www.archive.org |
| Libroteca | https://www.libroteca.net |
| Project Gutenberg | https://www.gutenberg.org/ |