| Language of origin | Number of titles |
| Translations - total | 4352 |
| English | 2340 |
| French | 227 |
| Italian | 64 |
| German | 991 |
| Polish | 71 |
| Russian | 36 |
| Slovak | 32 |
| Spanish | 38 |
| More languages | 429 |
| Classical Latin | 18 |
| Swedish | 16 |
| Classical Greek | 13 |
| Dutch | 8 |
| Hungarian | 6 |
| Danish | 5 |
| Croatian | 5 |
| Norwegian | 5 |
| Portuguese | 4 |
| Serbian | 4 |
| New Arabic | 3 |
| Finnish | 3 |
| Romanian | 3 |
| Old Church Slavonic | 3 |
| Classical Arabic | 2 |
| Esperanto | 2 |
| New Hebrew | 2 |
| Japanese | 2 |
| New Greek | 2 |
| Sanskrit | 2 |
| Slovene | 2 |
| Burmese | 1 |
| Chinese | 1 |
| Estonian | 1 |
| Old Hebrew | 1 |
| Icelandic | 1 |
| Yiddish | 1 |
| Catalonian | 1 |
| Korean | 1 |
| Modern and Medieval Latin | 1 |
| Classical Persian | 1 |
| Romany | 1 |
| Tibetan | 1 |
| Ukrainian | 1 |
| Flemish | 1 |