Amanuensis

Amanuensis is a search tool for the juristic sources of antiquity, including the Corpus Iuris Civilis, the Codex Theodosianus, many pre-Justinianic authors and several Germanic law codes.
Amanuensis uses, by courtesy of Hofrat Dr. Josef Menner, an enhanced, capitalized Romtext database.
By courtesy of Dr. Ingo G. Maier, Amanuensis additionally includes the Latin novels plus a comprehensive of collections
of unabridged constitutions which happened to be transmitted beyond the codes.
Leg.Nov.gr. and Greek CJ were created by Nederlandse vertaling project (Prof. Dr. J. E. Spruit) and their inclusion was made possible by courtesy of Projet Volterra (British Academy).
Note that most juristic sources are absent from PHI and LLT, so it is indeed worthwhile to have Amanuensis.
Amanuensis also integrates the Heumann-Seckel dictionary.