I put together a simple database using DDH Software's HanDBase that runs on any PalmOS device, Windows, and I think Mac's as well. I've thought about publishing it as freeware/shareware, but haven't made a decision yet. I'm waiting for some modifications to the file size in the current version of HanDBase before I'll made a decision. If there's interest, I'll look into publishing it.
Here's what it tracks:
Type (kitchen, fixed, folder, multi-tool, etc)
Maker
Model
Name
Blade Style
Blade Material
Blade Finish
Blade Length
Blade Thickness
Blade Hardness
Weight
Liner Material
Handle Material
Clip
Lock Mechanism
Overall Length
Closed Length
Sheath Material
Special Markings
Special Features
Cost
Most of these support user-editable lists, so you can, for example, add a maker that isn't among the 42 already there.
If anyone's interested, send me email. If there's enough interest, I'll work out a way to do a survey for suggestions later.
Oh, and it is already password-protected.