| FreeEBOOKS | Free ebooks! | 2,345,327 |
| booksuggestions | Book Suggestions | 1,246,567 |
| 52book | 52 Book Challenge | 636,519 |
| mangaswap | Manga Swap: Buy, Sell, Trade. | 584,899 |
| horrorlit | The Best Horror Literature and the Worst | 504,399 |
| RomanceBooks | r/RomanceBooks | 384,472 |
| Indianbooks | Indian Books: A haven for Indian Bibliophiles | 325,002 |
| Livros | Livros | 301,940 |
| audiobooks | audiobooks: a community of audiobibliophiles sharing and looking for their next great listen | 277,728 |
| bookshelf | Stacks of books on display | 271,195 |
| sciencefiction | Science Fiction | 264,637 |
| Stormlight_Archive | The Stormlight Archive | 260,050 |
| Lovecraft | H.P. Lovecraft | 257,203 |
| LightNovels | /r/LightNovels - Translated Japanese Novels | 241,065 |
| acotar | A Court of Thorns And Roses Book Series | 238,934 |
