Language codes used on
(use capital letters, e.g. English = EN)
| Language | ISO 639 code |
| Abkhazian | ab |
| Afar | aa |
| Afrikaans | af |
| Albanian | sq |
| Amharic | am |
| Arabic | ar |
| Armenian | hy |
| Assamese | as |
| Aymara | ay |
| Azerbaijani | az |
| Bashkir | ba |
| Basque | eu |
| Bengali | bn |
| Bihari | bh |
| Bislama | bi |
| Breton | be |
| Bulgarian | bg |
| Burmese | my |
| Byelorussian | be |
| Catalan | ca |
| Chinese | zh |
| Corsican | co |
| Croatian | hr |
| Czech | cs |
| Danish | da |
| Dutch | nl |
| Dzongkha | dz |
| English | en |
| Esperanto | eo |
| Estonian | et |
| Faroese | fo |
| Fijian | fj |
| Finnish | fi |
| French | fr |
| Frisian | fy |
| Gallegan | gl |
| Georgian | ka |
| German | de |
| Greek, Modern (1453-) | el |
| Greenlandic | kl |
| Guarani | gn |
| Gujarati | gu |
| Hausa | ha |
| Hebrew | he |
| Hindi | hi |
| Hungarian | hu |
| Icelandic | is |
| Indonesian | id |
| Interlingua (Intl.Aux.Lang.Assoc.) | ia |
| Inuktitut | iu |
| Inupiak | ik |
| Irish | ga |
| Italian | it |
| Japanese | ja |
| Javanese | jv/jw |
| Kannada | kn |
| Kashmiri | ks |
| Kazakh | kk |
| Khmer | km |
| Kinyarwanda | rw |
| Kirghiz | ky |
| Korean | ko |
| Kurdish | ku |
| Langued'Oc (post1500) | oc |
| Lao | lo |
| Latin | la |
| Latvian | lv |
| Lingala | ln |
| Lithuanian | lt |
| Macedonian | mk |
| Malagasy | mg |
| Malay | ms |
| Maltese | ml |
| Maori | mi |
| Marathi | mr |
| Moldavian | mo |
| Mongolian | mn |
| Nauru | na |
| Nepali | ne |
| Norwegian | no |
| Oriya | or |
| Oromo | om |
| Panjabi | pa |
| Persian | fa |
| Polish | pl |
| Portuguese | pt |
| Pushto | ps |
| Quechua | qu |
| Rhaeto-Romance | rm |
| Romanian | ro |
| Rundi | rn |
| Russian | ru |
| Samoan | sm |
| Sango | sg |
| Sanskrit | sa |
| Serbian | sr |
| Serbo-Croatian | sh |
| Shona | sn |
| Sindhi | sd |
| Singhalese | si |
| Siswant | ss |
| Slovak | sk |
| Slovenian | sl |
| Somali | so |
| Sotho, Southern | st |
| Spanish | es |
| Sudanese | su |
| Swahili | sw |
| Swedish | sv |
| Tagalog | tl |
| Tajik | tg |
| Tamil | ta |
| Tatar | tt |
| Telugu | te |
| Thai | th |
| Tibetan | bo |
| Tigrinya | ti |
| Tonga (Nyasa) | to |
| Tsonga | ts |
| Tswana | tn |
| Turkish | tr |
| Turkmen | tk |
| Twi | tw |
| Uighur | ug |
| Ukrainian | uk |
| Urdu | ur |
| Uzbek | uz |
| Vietnamese | vi |
| Volapük | vo |
| Welsh | cy |
| Wolof | wo |
| Xhosa | xh |
| Yiddish | yi |
| Yoruba | yo |
| Zhuang | za |
| Zulu | zu |