osCommerce
From their website : "osCommerce Online Merchant is a complete online store solution that contains both a catalog frontend and an administration tool backend"
LICENSE GPL v2
Newest version needs php (>5.2.0) and Mysql 4.1 or 5.0 .
Japanese language files here (up-to-date?)
osCommerce + Mobile
A japanese company, Searay Systems makes mobile extensions for osCommerce. They sell additional plugins for image and movie uploads, import export, mail magazine etc. here
- Requirements are php 4.2 (not tested on php5) and Mysql.
- Development of the mobile extension itself seems to be stopped.
- The japanese version seems to be based on a snapshot from 2003, and altogether development seems silent
More info and reviews here. There is also a Japanese book about making a site with oscommerce.
osCommerce + Japanese customization
EC design is selling services based on osCommerce. They have a demo site as well. However, no word about mobile.
References
Example site (broken on my SoftBank 823T)