Ain't no such critter.
Even scanning into a notation program like Finale or Sibelius, you only get 80-90% accuracy, and then only if you have clean, high resolution originals. So you end up having to spend a LOT of time proof-reading to make sure all the notes imported correctly BEFORE you do the transposition. It'll be a heck of a lot easier (and cheaper if you factor in the cost of the time spent scanning, proofing, transposing, and printing) just to buy a set of quintet books.
Check out
Caroler's Favorites. A complete set runs around $50. Not bad for 125 carols plus a few Thanksgiving songs and 8 additional arrangements. Plus, they include suggestions for adapting the carols for other instrumentation. My church's brass 5tet, woodwind, mixed wind, and string ensembles, and orchestra has been using them for years. You'll need to order Part 1 Bb, Part 2 Bb, Part 3 F, Part 4 C (BC), and Part 5 C (BC) for a standard 5tet instrumentation. If Parts 4 and/or 5 in Bb are going to be covered/doubled by a eupher who only reads TC, you'll need to order the Bb version for that part.