- English 9,687,526 books
- French / français 1,089,774 books
- Spanish / español 907,852 books
- German / Deutsch 773,325 books
- Russian / Русский язык 545,251 books
- Italian 363,811 books
- Chinese 335,893 books
- Japanese 266,289 books
- Portuguese 238,549 books
- Arabic 194,473 books
- Polish 132,615 books
- Hebrew 105,472 books
- Korean 91,518 books
- Dutch 87,356 books
- Indonesian 83,704 books
- Latin 82,989 books
- Undetermined 80,846 books
- Mandarin 75,100 books
- Hindi 63,537 books
- Swedish 62,478 books
- Danish 58,505 books
- Urdu 57,604 books
- Hungarian 52,952 books
- Czech 49,370 books
- Turkish 46,364 books
- Ukrainian 39,139 books
- Greek 37,329 books
- Vietnamese 36,827 books
- Bulgarian 35,521 books
- Bengali 35,381 books
- Romanian 33,749 books
- Catalan 32,746 books
- Norwegian 31,620 books
- Thai 30,811 books
- Persian 29,925 books
- Croatian 27,338 books
- Multiple languages 25,955 books
- Finnish 25,843 books
- Tamil 25,236 books
- Gujarati 21,418 books
- Marathi 19,726 books
- Serbian 18,251 books
- Panjabi 17,101 books
- Welsh 15,856 books
- Telugu 15,487 books
- Yiddish 14,241 books
- Kannada 13,740 books
- Slovak 13,384 books
- Sanskrit 12,472 books
- Armenian 11,721 books
- Malayalam 11,617 books
- Malay 10,836 books
- Burmese 10,712 books
- Slovenian 9,582 books
- Lithuanian 9,191 books
- Tibetan 9,100 books
- Latvian 8,603 books
- Estonian 8,425 books
- Nepali 8,327 books
- Oriya 7,944 books
- Mongolian 7,686 books
- Albanian 7,668 books
- Irish 7,370 books
- Georgian 7,018 books
- Afrikaans 6,737 books
- Ancient Greek 5,878 books
- Macedonian 5,795 books
- Belarusian 5,600 books
- Icelandic 5,345 books
- Serbian 4,538 books
- Sindhi 4,032 books
- Sinhalese 4,023 books
- Turkish, Ottoman 3,649 books
- Kurdish 3,097 books
- Azerbaijani 3,030 books
- Pushto 2,798 books
- Amharic 2,698 books
- Galician 2,529 books
- Croatian 2,480 books
- Sinhalese 2,411 books
- Assamese 2,398 books
- Uzbek 2,239 books
- Scottish Gaelix 1,980 books
- Kazakh 1,900 books
- Swahili 1,790 books
- Bosnian 1,731 books
- Galician 1,607 books
- Basque 1,577 books
- Tagalog 1,467 books
- Rajasthani 1,419 books
- Irish 1,233 books
- Lao 1,221 books
- Javanese 1,161 books
- Maithili 1,060 books
- Tajik 1,054 books
- Khmer 1,039 books
- Raeto-Romance 966 books
- Konkani 943 books
- Sino-Tibetan (Other) 912 books
- Moldavian 885 books
- Kyrgyz 879 books
- Newari 874 books
- Indic (Other) 803 books
- French, Middle (ca. 1300-1600) 800 books
- Esperanto 776 books
- Hausa 772 books
- Tagalog 764 books
- Turkmen 761 books
- English, Middle (1100-1500) 749 books
- Austronesian (Other) 703 books
- Pali 677 books
- French, Old (ca. 842-1300) 653 books
- Niger-Kordofanian (Other) 621 books
- Tigrinya 590 books
- Sorbian (Other) 578 books
- Bhojpuri 544 books
- Romance (Other) 535 books
- Altaic (Other) 500 books
- Braj 494 books
- Sundanese 488 books
- Finno-Ugrian (Other) 484 books
- Faroese 479 books
- Balinese 455 books
- Tatar 445 books
- Bashkir 437 books
- Tatar 419 books
- Church Slavic 402 books
- Dravidian (Other) 401 books
- Prakrit languages 401 books
- Papuan (Other) 399 books
- Dogri 379 books
- Lahndā 370 books
- Manipuri 364 books
- Yoruba 360 books
- German, Middle High (ca. 1050-1500) 349 books
- Kashmiri 339 books
- Frisian 329 books
- Egyptian 318 books
- Malagasy 314 books
- Romani 313 books
- Syriac, Modern 310 books
- Caucasian (Other) 304 books
- Serbo-Croatian 298 books
- South American Indian (Other) 296 books
- Provençal (to 1500) 295 books
- Creoles and Pidgins, French-based (Other) 289 books
- English, Old (ca. 450-1100) 286 books
- Baluchi 286 books
- Scottish Gaelic 284 books
- Chuvash 280 books
- Kinyarwanda 280 books
- Zulu 278 books
- Slavic (Other) 275 books
- Somali 267 books
- Maltese 264 books
- Uighur 261 books
- Malagasy 255 books
- Shona 247 books
- Occitan (post 1500) 241 books
- Breton 231 books
- Scots 223 books
- Sotho 218 books
- Mayan languages 215 books
- Xhosa 199 books
- Germanic (Other) 183 books
- Eskimo languages 180 books
- Akkadian 164 books
- Maldivian 160 books
- Yakut 160 books
- Tswana 156 books
- Northern Sotho 154 books
- Papiamento 152 books
- Bantu (Other) 151 books
- Ossetic 151 books
- Cree 150 books
- Igbo 136 books
- Faroese 132 books
- North American Indian (Other) 130 books
- Magahi 128 books
- Aramaic 127 books
- Esperanto 126 books
- Khasi 122 books
- Ojibwa 122 books
- Quechua 122 books
- Ganda 119 books
- Marwari 117 books
- Awadhi 113 books
- Cornish 108 books
- Ladino 108 books
- Dzongkha 107 books
- Coptic 105 books
- Nahuatl 104 books
- Central American Indian (Other) 102 books
- Philippine (Other) 102 books
- Mohawk 101 books
- Creoles and Pidgins (Other) 100 books
- Nyanja 99 books
- Wolof 99 books
- Hawaiian 98 books
- Ethiopic 93 books
- Miscellaneous languages 93 books
- Mon-Khmer (Other) 91 books
- Algonquian (Other) 87 books
- Ndebele (Zimbabwe) 83 books
- Nilo-Saharan (Other) 83 books
- Mari 81 books
- Venda 81 books
- Chechen 80 books
- Ethiopic 80 books
- Khmer 79 books
- Friulian 78 books
- Fula 75 books
- Oromo 75 books
- Judeo-Arabic 75 books
- Buriat 74 books
- Adygei 73 books
- Bemba 73 books
- Karen languages 70 books
- Shona 69 books
- Twi 69 books
- Batak 67 books
- Kara-Kalpak 61 books
- Komi 60 books
- Maori 60 books
- Sotho 60 books
- Tsonga 60 books
- Creoles and Pidgins, English-based (Other) 59 books
- Guarani 59 books
- Micmac 59 books
- Swazi 59 books
- Tajik 59 books
- Samoan 58 books
- Occitan (post 1500) 56 books
- Achinese 55 books
- Sami 55 books
- Minangkabau 55 books
- Tswana 55 books
- Afroasiatic (Other) 54 books
- Filipino 54 books
- Pahlavi 54 books
- Sumerian 54 books
- Ewe 53 books
- Himachali 53 books
- Kawi 52 books
- Lushai 51 books
- Cebuano 50 books
- Cherokee 49 books
- Ndonga 49 books
- Iloko 48 books
- Kabardian 48 books
- Oromo 47 books
- Dutch, Middle (ca. 1050-1350) 46 books
- Bambara 44 books
- Old High German 43 books
- Gothic 41 books
- Kongo 41 books
- Munda (Other) 41 books
- Kurukh 39 books
- Pampanga 39 books
- Guarani 38 books
- Gã 37 books
- Frisian 35 books
- Iban 35 books
- Makasar 34 books
- Haitian French Creole 32 books
- Kikuyu 32 books
- Choctaw 31 books
- Creoles and Pidgins, Portuguese-based (Other) 31 books
- Dakota 30 books
- Udmurt 30 books
- Creek 29 books
- Santali 29 books
- Berber (Other) 28 books
- Hiligaynon 28 books
- Iroquoian (Other) 28 books
- Kuanyama 28 books
- Manobo languages 28 books
- Rundi 28 books
- Shan 28 books
- Tuvinian 28 books
- Chagatai 27 books
- Syriac 27 books
- Athapascan (Other) 26 books
- Aymara 26 books
- Bugis 26 books
- Celtic (Other) 26 books
- Interlingua (International Auxiliary Language Association) 26 books
- Oirat 26 books
- Avaric 25 books
- Songhai 25 books
- Tahitian 25 books
- Tetum 25 books
- Iranian (Other) 23 books
- Kachin 23 books
- Norwegian (Bokmål) 23 books
- Vai 23 books
- Bikol 22 books
- Mooré 22 books
- Tigré 21 books
- Fanti 20 books
- Herero 20 books
- Hmong 20 books
- Kalâtdlisut 20 books
- Madurese 20 books
- Cantonese 20 books
- Chinook jargon 19 books
- Lingala 19 books
- Mandingo 19 books
- Low German 19 books
- Basa 18 books
- Gayo 18 books
- gsw 18 books
- Indo-European (Other) 18 books
- Kru (Other) 18 books
- Kumyk 18 books
- Tsimshian 18 books
- Zapotec 18 books
- Acoli 17 books
- Adangme 17 books
- Akan 17 books
- Khoisan (Other) 17 books
- Luxembourgish 17 books
- Sardinian 17 books
- Mapuche 16 books
- Dyula 16 books
- Lozi 16 books
- Sango (Ubangi Creole) 16 books
- Karachay-Balkar 15 books
- Lezgian 15 books
- Luo (Kenya and Tanzania) 15 books
- Swazi 15 books
- Nyankole 14 books
- Salishan languages 14 books
- Judeo-Persian 13 books
- Palauan 13 books
- Sami 13 books
- Afar 12 books
- Abkhaz 12 books
- Gondi 12 books
- Nzima 12 books
- Ponape 12 books
- Samaritan Aramaic 12 books
- Samoan 12 books
- Serer 12 books
- Apache languages 11 books
- Crimean Tatar 11 books
- Efik 11 books
- Inuktitut 11 books
- Navajo 11 books
- Tamashek 11 books
- Australian languages 10 books
- Otomian languages 10 books
- Waray 10 books
- Yupik languages 10 books
- Avestan 9 books
- Cushitic (Other) 9 books
- Delaware 9 books
- Fon 9 books
- Interlingua (International Auxiliary Language Association) 9 books
- Erzya 9 books
- Pangasinan 9 books
- Old Persian (ca. 600-400 B.C.) 9 books
- Flemish 9 books
- Bamileke languages 8 books
- Siksika 8 books
- Dayak 8 books
- Mende 8 books
- Old Norse 8 books
- Tai 8 books
- Tongan 8 books
- Ugaritic 8 books
- Yao (Africa) 8 books
- Zaza 8 books
- Edo 7 books
- East Frisian 7 books
- Ingush 7 books
- Marshallese 7 books
- Semitic (Other) 7 books
- Artificial (Other) 6 books
- Cheyenne 6 books
- Chamic languages 6 books
- Dargwa 6 books
- Duala 6 books
- Elamite 6 books
- Fang 6 books
- Fijian 6 books
- Gilbertese 6 books
- Ijo 6 books
- Kamba 6 books
- Nogai 6 books
- Temne 6 books
- Aragonese 5 books
- Arapaho 5 books
- Arawak 5 books
- Dinka 5 books
- Grebo 5 books
- Kusaie 5 books
- Luba-Katanga 5 books
- Manchu 5 books
- Nyoro 5 books
- Rarotongan 5 books
- Selkup 5 books
- Tokelauan 5 books
- Tonga (Nyasa) 5 books
- Tumbuka 5 books
- Altai 4 books
- American Sign Language 4 books
- Asturian 4 books
- Chuukese 4 books
- Corsican 4 books
- Ewondo 4 books
- Gorontalo 4 books
- Hiri Motu 4 books
- Mongo-Nkundu 4 books
- Lunda 4 books
- Masai 4 books
- Niuean 4 books
- Aromanian 4 books
- Sasak 4 books
- Siouan (Other) 4 books
- Susu 4 books
- Zuni 4 books
- Baltic (Other) 3 books
- Carib 3 books
- Chamorro 3 books
- Kabyle 3 books
- Kanuri 3 books
- Khotanese 3 books
- Luba-Lulua 3 books
- Moksha 3 books
- Ndebele (South Africa) 3 books
- Umbundu 3 books
- Wakashan languages 3 books
- Wolayta 3 books
- Aleut 2 books
- Bislama 2 books
- Gbaya 2 books
- Manx 2 books
- Gullah 2 books
- Inupiaq 2 books
- Karelian 2 books
- Lamba (Zambia and Congo) 2 books
- Sandawe 2 books
- Sidamo 2 books
- Soninke 2 books
- Sranan 2 books
- Sukuma 2 books
- Terena 2 books
- Tiv 2 books
- Tlingit 2 books
- Tok Pisin 2 books
- Tuvaluan 2 books
- Yapese 2 books
- Ekajuk 1 book
- Upper Sorbian 1 book
- Ido 1 book
- Kimbundu 1 book
- Kpelle 1 book
- Mirandese 1 book
- Nynorsk 1 book
- Nubian languages 1 book
- Osage 1 book
- Northern Sami 1 book
- Zande languages 1 book