Here's a handy Bible Search from BibleGateway.com.
Internet Sacred Text Archive: the largest freely available archive of online books about religion, mythology, folklore and the esoteric on the Internet. The site is dedicated to religious tolerance and scholarship, and has the largest readership of any similar site on the web.
The Nag Hammadi Library: a collection of thirteen ancient codices containing over fifty texts, was discovered in upper Egypt in 1945. This immensely important discovery includes a large number of primary Gnostic scriptures -- texts once thought to have been entirely destroyed during the early Christian struggle to define "orthodoxy" -- scriptures such as the Gospel of Thomas, the Gospel of Philip, and the Gospel of Truth.
Pseudepigrapha, Apocrypha and Sacred Writings: Probably the most complete collection of these writings I've found.
Bible Dictionary: This dictionary has been designed to provide teachers and students with a concise collection of definitions and explanations of items that are mentioned in or are otherwise associated with the Bible. In addition to names of persons and places mentioned in the Bible, there are articles that may be regarded as introductory to the study of scripture, such as Bible, canon, revelation, and certain cultural items.