간체자
Tong Wen Tang () is a Firefox browser extension that converts Chinese-language web pages between Traditional and Simplified Chinese characters. Thanks to the extension, Chinese-language users can access content written in the other writing system. According to records in forums of Mozilla Taiwan, Tong Wen Tang was firstly developed by Hashao (哈少), a mainland Chinese netizen. However, the edition supported only the Mozilla Firefox 0.9.