Acta Pauli online Greek text (no apparatus) in unicode. I was confused about this website because for some reason, the unicode Greek fonts did not appear correctly in Firefox. This problem was solved by viewing the page in MS Internet explorer 7.
The texts include the Hamburg Papyrus, Acts of Paul and Thecla (Lipsius), the Martyrdom of Paul (Libsius) and 3 Corinthians (Papyrus Bodmer X).
The main website (http://patrologia.narod.ru/) contains other biblical studies and Patristic texts in Hebrew and Greek.