No ancient literature has survived in its original form; everything we have is derived from copies of the originals. The NT is no exception. However, in comparison with any other ancient literature, the NT is without a peer—both in terms of the chronological proximity and the surviving number. Several ancient authorities are preserved in only a handful of manuscripts. Not so with the NT. There are approximately 5,500 Greek witnesses, ranging in date from the second century AD into the middle ages. Besides the Greek evidence, there are nearly 30,000 versional copies (e.g., Latin, Coptic, and Syriac), and over 1,000,000 quotations from the NT in the church Fathers. NT textual criticism has always had an embarrassment of riches unparalleled in any other field.
From the NET Bible. Go to the link, and then click on "Greek Manuscript Evidence."