Small companies rarely want software — they want the filing done. The products here bundle machine-learning bookkeeping (auto-categorised transactions, data extracted from invoices and receipts) with accountants who review the output and handle statutory filings, usually as an annual fixed-price package.
The model is most developed in jurisdictions where company compliance is an annual ritual with hard deadlines: Hong Kong profits tax and audit coordination, UK company accounts, Singapore filings. Automation absorbs the data entry; the accountant carries the professional responsibility.