Following languages are supported by the Supertext System:
| Language | Code |
| German (CH) | de-CH |
| English (US) | en-US |
| French (CH) | fr-CH |
| Italian (CH) | it-CH |
| Schwedisch | sv-SE |
| Dänisch | da-DK |
| Norwegisch (Bokmål) | nb-NO |
| Spanish (ES) | es-ES |
| Portuguese (PT) | pt-PT |
| Niederländisch | nl-NL |
| Chinese | zh |
| Russisch | ru-RU |
| German (DE) | de-DE |
| German (AT) | de-AT |
| English (GB) | en-GB |
| French (FR) | fr-FR |
| Italian (IT) | it-IT |
| Türkisch | tr-TR |
| Polnisch | pl-PL |
| English (IE) | en-IE |
| German | de |
| French | fr |
| English | en |
| Italian | it |
| Flämisch | nl-BE |
| Französisch (BE) | fr-BE |
| Albanian | sq-AL |
| Arabic | ar-SA |
| Bosnian | bs-BA |
| Norwegian | no-NO |
| Estonian | et-EE |
| Finnish | fi-FI |
| Greek | el-GR |
| Hebrew | he-IL |
| Japanese | ja-JP |
| Korean | ko-KR |
| Croatian | hr-HR |
| Latvian | lv-LV |
| Lithuanian | lt-LT |
| Macedonian | mk-MK |
| Serbian (Cyrillic) | Cy-sr |
| Slovak | sk-SK |
| Slovenian | sl-SI |
| Czech | cz |
| Thai | th-TH |
| Hungarian | hu-HU |
| Romanian | ro-RO |
| Spanish (LAm) | es-LAm |
| Portuguese (Brazil) | pt-BR |
| Romansh (CH) | rm-CH |
| Spanish | es |
| Portuguese | pt |
| Chinese (Simplified) | zh-Hans |
| Chinese (Traditional) | zh-Hant |
| Bulgarian | bg-BG |
| Tamil | ta-IN |
| Malaysian | ms-MY |
| Hindi | hi-IN |
| Latin | la |
| Vietnamese | vi-VN |
| Urdu | ur-IN |
| Dari | prs |
| Northern Kurdish | kmr |
| Serbian (Latin) | Lt-sr |
| Ukrainian | ukr |
| Azerbaijani Turkish | aze |
| Tigrinya | ti-ET |
| Indonesian | id-ID |
| Catalan | ca-ES |
| Tagalog | tl |
| Maltese | mt-MT |
| Esperanto | eo |
| Luxembourgish | lb-LU |
| Farsi | fa-IR |
| Georgian | ka-GE |
| Icelandic | is-IS |