Tong Wen Tang
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Tong Wen Tang (Chinese: 同文堂) 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.
Softcup, a Taiwanese netizen, subsequently developed the New Tong Wen Tang. The browser extension is released under version 2 of the GNU General Public License.