"Is there a program specifically for estate taxes?"
Intuit offers TurboTax Business, which can be used to prepare and file a Form 1041 (estate income tax return).
TurboTax Business is not available online and must be installed and run in a Windows environment.
See https://turbotax.intuit.com/small-business-taxes/
There is no TurboTax product, however, that can be used to prepare a Form 706 (estate tax return).
See https://www.irs.gov/pub/irs-pdf/f706.pdf
