Hello Kerosene
I fly a Global which has the ABACUS performance-software installed on the aircraft laptop. Doing the mass and balance as well as the performance calculations is a doddle, even on short notice, as you say. The given sectors' pilot flying will run the numbers as a part of the cockpit-setup, and print them out on board, in duplicate. One set of papers stays behind with the handling-agent. As a backup I've installed the same software on my personal laptop. This means that I can come up with 'can we go or not' answers without being on the airplane.
I doubt you'll find many operators spending the required money on runway analysis in the bizzjet world, seeing as everything is unscheduled. All the more reason to read every last nuance on the jepp-plates and to do the calculations.
Regards,
Bug