Based on: The WordPress Rus filename translit plugin by fixed77. Russian filename and link (from title) translitter for WordPress.
Набор дополнений и улучшений WordPress | Kit of additions and improvements for WordPress
WordPress russian filename translitter.
Transliterate text in posts and pages from Serbian Cyrillic to Latin script. Visitor can select output script from widget.
Convert text in posts from Kazakh Cyrillic to Arabic script.
Simple ukrainian and russian translit for post/page title and uploaded files
Converts non-Latin characters to ASCII in post slugs.