According to Wikipedia an asset register “is essentially nothing more than a list of” physical items (property, plant and equipment” (i.e. fixed assets) that belong to an accounting entity (i.e. a company, business or organisation)
Of the thousands of businesses that we have spoken to, most use a spreadsheet (like Microsoft Excel) to hold that asset list. The question really is, if Excel is what most people use, then why are people looking to change?
Depending on your background you'll have a gut feel already.