| Language of origin | Number of titles |
| Translations - total | 4342 |
| English | 2329 |
| French | 225 |
| Italian | 59 |
| German | 982 |
| Polish | 67 |
| Russian | 50 |
| Slovak | 116 |
| Spanish | 32 |
| More languages | 331 |
| Dutch | 27 |
| Classical Latin | 11 |
| Swedish | 10 |
| Norwegian | 8 |
| Old Church Slavonic | 8 |
| Danish | 6 |
| Finnish | 6 |
| Japanese | 6 |
| Flemish | 6 |
| Hungarian | 5 |
| Portuguese | 5 |
| New Greek | 5 |
| New Arabic | 4 |
| Esperanto | 4 |
| Modern and Medieval Latin | 4 |
| Slovene | 4 |
| Serbian | 4 |
| Croatian | 3 |
| Cymric | 3 |
| Bulgarian | 2 |
| Chinese | 2 |
| New Hebrew | 2 |
| Icelandic | 2 |
| Macedonian | 2 |
| Classical Greek | 2 |
| Albanian | 1 |
| Azerbaydzhanian | 1 |
| Hawaiian | 1 |
| Old HebrewKorean | 1 |
| Yiddish | 1 |
| Catalonian | 1 |
| Korean | 1 |
| Roumanian | 1 |
| Old Egyptian | 1 |
| Ukrainian | 1 |