Most of the enterprise applications that do inventory management (Spiceworks, Altiris, etc.) have clients that run on your network that can poll the hardware for detailed specifics. They track the logged-on user, the serial number, the BIOS date, etc. Obviously some do this better than others (I have yet to see one that does networked printers, projectors, smart TVs, etc).

What would you pay for this service, annually? What are the features you would find most useful?

  Forward an email receipt to [email protected] and have it auto-create a purchase record
  Upload a PDF invoice or receipt
  Manually create a purchase
  Track purchase orders
  Enter serial numbers
  Track depreciation
  Produce reports of in-service equipment
  Enter a comment about deployed location (e.g. John Smith, or Board Room)
  Track service history?

Inventory management is a big topic. It sounds like you want a niche product, or that you perhaps need to look at some of the players in the space.

There's a clear gap in my mind between enterprise and SMB. I don't need the features of a Spiceworks (yet). Look at what Resumator did (big space but found the 'niche' to allow the CEO/COO to act like head of HR).

All the Features you mentioned, plus multi user access (for bookkeeper / accountants).

I'd pay $3-500 annually (maybe do something like $X per device > 5 devices).

Asset tracking software is probably more along the lines of what you're looking for.

Have any suggestions?