[cctalk] Good Inventory Program for keeping track of my DEC boards, parts, computers, etc?

I'm looking for a good inventory program to help me keep track of all of my PDP-8 stuff. I would like to keep track of physical location, board etch revision, board modification revision, bus type, where used, etc. If you have any good ideas, please let me know. I'm using a simple spreadsheet for now and it's not what I'm looking for. Thank you.