Sorry, currently there is only the English version...

http://www.buddhanet.net is huge and very nice Buddhistic page. It covers not only Theravada. You can find there a lot of Buddhistic books.

http://metta.lk is the Sri Lanka web page containing the html transcript of Tipitaka, but also many other Buddhistic articles, on-line Pali course, articles in Sinhala language and others.