Oretter is a web-based twitter client suitable for Japanese mobile phones (keitai). Working demo: https://oretter.tondol.com/
Oretter requires PHP version 5.3 or higher (w/ cURL module) and MySQL version 5.1 or higher.
To create a database and tables of MySQL, use INSTALL.sql.
Oretter is currently maintained by @tondol (https://twitter.com/tondol/). The source code of Oretter is published on GitHub: https://github.com/tondol/oretter/