This is my copy of the US Naval Observatory's NOVAS-C software (https://aa.usno.navy.mil/software/novasc_intro) with a couple bug fixes applied. I've also enhanced it with the ability to open many more versions of the JPL ephemerides. Please give the USNO proper credit if you use this software.
JPL has released two new ephemerides, DE440 and DE441. Support needs to be added for them.