I've got a public beta of an inventory system I've been working on. Its goal is to replace the need for a hardcopy bound book, thanks to the new BATF regs, and provide a large number of features for shooters. It has been coming along nicely and but I could use more feedback. I should be releasing the next version with Dropbox functionality built in shortly (just need to finish making the timing configurable) and a bunch of other fixed stuff later on tonight or tomorrow (depending on the number of redbulls I have left). If you're interested in checking it out, you can download it from http://mygundb.com It runs on Windows, Macs and Linux thanks to being written in AIR.