We use http://www.sivann.gr/software/itdb/ with a few minor UI/language mods. Works a treat!
We’d used Spiceworks in the past, but it’s dynamic/scanning nature tended to mess things up. This sometimes added great confusion as to what the actual truth was.
With a completely manual database, at least we know any changes would’ve been done by a human and not some script editing our records. FOG’s inventory is still good for cross-checking the asset db records though!