As you can see by my sidebar, I have added numerous ancient (and some medieval) Jewish manuscripts, texts, and translations. Because of the sheer number and range of materials, I have not placed them in my typical order of digitized manuscripts, original language texts, and then translations, but largely in Chronological order and by collection: see ancient Jewish materials (Dead Sea Scrolls, Apocrypha, Pseudepigrapha, Philo, and Josephus) and then Rabbinic Materials (Mishnah, Talmud, etc.).
There is plenty here, but if you know of any good websites, especially having digitized manuscripts or original language materials, please pass along the information.
Moreover, check out the earlier sections (Biblical and early Christian), because I have added some materials to those as well.