Tavern Keeper is a program to help you with your character sheets during RP sessions. They’re up on Kickstarter now and looking for funding.
From the campaign:
Tavern Keeper wants to take your Tabletop RPG to the next level with a Dynamic Character Sheet engine. Whether you’re new to Roleplaying Games or an old vet, this tool will help players get up to speed quickly with a new game system by providing an intuitive interface based on the unique requirements of the gaming system you choose.