I use Excel right now to keep track of orders, but when I get more organized I'd love to go to Microsoft Access to keep track of inventory. I used Access at a former job to organize their files and the database setup makes it easy to query and cross-reference information so that accurate data is at your fingertips. My biggest problem is getting over to the computer to enter in what I've bought and what I've sold. I wish there was a very low cost POS handheld device so I could just enter in the wax, FO, container, wick, tab, and label as I make candles, or shoot it at a barcode when I sell one.