I don't know whether software packages actually handle this, but I'll mention the most evolved ones: nmrView, Cara, CCPN Analysis, smart notebook. One or few of these may work for the purpose. I'm curious to know which one actually does. However, you can still be very productive - possibly more productive than the GUI software user - with plain text peak lists if you master some scripting language. I recommend Python. Also, just for the purpose of extracting splittings I've in the past created **[this sparky plugin][1]** that allows you to select two peaks and determine splitting in hertz. With this method you'll still have to go peak by peak but gives the splitting values directly. [1]: http://nmrwiki.org/wiki/index.php?title=Calculate_splitting_(sparky_script)