BEYTrans (Better Environment for Your TRANSlation) is a generic Wiki tool designed to support communities of volunteer translators not only by offering them an online translation editor and helps to manage the translation progress, but a complete online computer-assisted translation (CAT) environment including a translation editor, translation memories, free dictionaries, automatic calls to machine translation (MT) systems, and support to collaborative volunteer translation. We present the basic concepts of BEYTrans and its experimentation on the translation from Italian to French of the DEMGOL project (OnLine Etymological Dictionary of the Greek Mythology).