The Bible in English contains twenty-one versions of the Bible in full text, from the 10th to the 20th centuries. It is possible to do word searches within individual translations.
Digital library of Greek literature from Homer to the fall of Byzantium in AD 1453. Includes searchable text of the Greek New Testament, Septuaginta, and many early Christian/patristic texts.
This concordance is based on the NRSV and the Greek text of the UBS Greek New Testament, 4th rev. ed. Analytical concordances allow you to see what Greek word is being translated by each occurence of an English word.