Windows 8.1 has a good support for multiple languages, and Windows 8.1 "says" more than 7,000 words.
Windows 8.1 has been able to support more than 7,000 different languages around the world, according to the official latest version of the growing support for multiple languages. Basically, as long as you say "words", Windows can "listen" to understand. Windows now offers up to 108 language packs, all of which can be loaded individually, while supporting 202 keyboard layouts, allowing users to enter text in more than 7000 languages.
You might wonder, are there so many languages on Earth? Yes, because many languages have no words and cannot be written down. For example, the Latin alphabet is used in English, French, and Spanish, but there are hundreds of languages that do not have their own text system, so Windows can support so many languages with more than 50 sets of main words.
To be precise, Windows already allows 98% of the world's population to enter text at least one way, and the remaining 2%, if interested, can be created on its own.
Because some of the keyboard layout is not yet a standard solution, Microsoft has deliberately made some of their own design, such as "Sora" (Gothic) (Gothic).
Also, Windows is the only operating system that supports languages such as the Dai language in Xishuangbanna, and displays and enters text without problems.
Spindle keyboard layout
Gothic keyboard layout
Keyboard layout of Dai language in Xishuangbanna