If your native language is not EN_US or you know any other spoken language just fine you can easily contribute!)
The Arabic Alphabet and Its Transliteration
(source: narod.ru)
The Bulgarian Alphabet and Its Transliteration
Wanted!
**
Bahasa Indonesia
Bahasa Melayu
Català
Česky
Dansk
Deutsch
Eesti
Ελληνικά
Español
Esperanto
Euskara
فارسی
Français
Galego
עברית
Hrvatski
Italiano
한국어
Lietuvių
Magyar
Nederlands
日本語
Norsk (bokmål)
Norsk (nynorsk)
Polski
Português
Română
Русский
Slovenčina
Slovenščina
Српски / Srpski
Suomi
Svenska
ไทย
Tiếng Việt
Türkçe
Українська
中文
Many transliteration systems for Ukrainian can be found on this page. Similarly, Wikipedia can help you with other languages as well 🙂
P.S. Probably the best transliteration table for Ukrainian:
(source: translit.kh.ua)