Two of the key reasons organizations cite for using DITA are:
DITA and DITA Open Toolkit support the languages listed in the following table.
| Language | xml:lang value |
|---|---|
| Arabic | ar-eg |
| Belarusian | bg-bg |
| Bulgarian | be-by |
| Catalan | ca-es |
| Chinese (Simplified) | zh-cn |
| Chinese (Traditional) | zh-tw |
| Croatian | hr-hr |
| Czech | cs-cz |
| Danish | da-dk |
| Dutch | nl-nl |
| Dutch (Belgian) | nl-be |
| English (Canadian) | en-ca |
| English (UK) | en-gb |
| English (US) | en-us |
| Estonian | et-ee |
| Finnish | fi-fi |
| French | fr-fr |
| French (Belgian) | fr-be |
| French (Canadian) | fr-ca |
| French (Swiss) | fr-ch |
| German | de-de |
| German (Swiss) | de-ch |
| Greek | el-gr |
| Hebrew | he-il |
| Hungarian | hu-hu |
| Icelandic | is-is |
| Italian | it-it |
| Italian (Swiss) | it-ch |
| Japanese | ja-jp |
| Korean | ko-lr |
| Latvian | lv-lv |
| Lithuanian | lt-lt |
| Macedonian | mk-mk |
| Norwegian | no-no |
| Polish | pl-pl |
| Portuguese | pt-pt |
| Portuguese (Brazilian) | pt-br |
| Romanian | ro-ro |
| Russian | ru-ru |
| Serbian | sr-sp |
| Slovak | sk-sk |
| Slovenian | sl-si |
| Spanish | es-es |
| Swedish | sv-se |
| Thai | th-th |
| Turkish | tr-tr |
| Ukranian | uk-ua |