| Language of origin | Number of titles |
| Translations - total | 3 910 |
| English | 2 088 |
| French | 201 |
| Italian | 39 |
| German | 927 |
| Polish | 63 |
| Russian | 41 |
| Slovak | 49 |
| Spanish | 26 |
| More languages | 326 |
| Dutch | 31 |
| Classical Latin | 28 |
| Swedish | 14 |
| Portuguese | 10 |
| Danish | 7 |
| New Hebrew | 6 |
| Japanese | 6 |
| Norwegian | 6 |
| Croatian | 4 |
| Slovene | 4 |
| Chinese | 3 |
| Modern and Medieval Latin | 3 |
| Romany | 3 |
| Old Church Slavonic | 3 |
| Bengali | 2 |
| Finnish | 2 |
| Hungarian | 2 |
| Classical Greek | 2 |
| New Arabic | 1 |
| Belarussian | 1 |
| Bulgarian | 1 |
| Old Hebrew | 1 |
| Hindi | 1 |
| Icelandic | 1 |
| Catalonian | 1 |
| Wendic | 1 |
| Romanian | 1 |
| New Greek | 1 |
| Sanskrit | 1 |
| Serbian | 1 |
| Tamil | 1 |
| Tibetan | 1 |